640249920

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1453}}^1$

素因数の和:1499

約数の個数: 280

約数和(自身を含む): 2413110744

約数和(自身を除く): 1772860824

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 32, 34, 36, 40, 45, 48, 51, 54, 60, 64, 68, 72, 80, 81, 85, 90, 96, 102, 108, 120, 135, 136, 144, 153, 160, 162, 170, 180, 192, 204, 216, 240, 255, 270, 272, 288, 306, 320, 324, 340, 360, 405, 408, 432, 459, 480, 510, 540, 544, 576, 612, 648, 680, 720, 765, 810, 816, 864, 918, 960, 1020, 1080, 1088, 1224, 1296, 1360, 1377, 1440, 1453, 1530, 1620, 1632, 1728, 1836, 2040, 2160, 2295, 2448, 2592, 2720, 2754, 2880, 2906, 3060, 3240, 3264, 3672, 4080, 4320, 4359, 4590, 4896, 5184, 5440, 5508, 5812, 6120, 6480, 6885, 7265, 7344, 8160, 8640, 8718, 9180, 9792, 11016, 11624, 12240, 12960, 13077, 13770, 14530, 14688, 16320, 17436, 18360, 21795, 22032, 23248, 24480, 24701, 25920, 26154, 27540, 29060, 29376, 34872, 36720, 39231, 43590, 44064, 46496, 48960, 49402, 52308, 55080, 58120, 65385, 69744, 73440, 74103, 78462, 87180, 88128, 92992, 98804, 104616, 110160, 116240, 117693, 123505, 130770, 139488, 146880, 148206, 156924, 174360, 196155, 197608, 209232, 220320, 222309, 232480, 235386, 247010, 261540, 278976, 296412, 313848, 348720, 370515, 392310, 395216, 418464, 440640, 444618, 464960, 470772, 494020, 523080, 588465, 592824, 627696, 666927, 697440, 741030, 784620, 790432, 836928, 889236, 941544, 988040, 1046160, 1111545, 1176930, 1185648, 1255392, 1333854, 1394880, 1482060, 1569240, 1580864, 1778472, 1883088, 1976080, 2000781, 2092320, 2223090, 2353860, 2371296, 2510784, 2667708, 2964120, 3138480, 3334635, 3556944, 3766176, 3952160, 4001562, 4184640, 4446180, 4707720, 4742592, 5335416, 5928240, 6276960, 6669270, 7113888, 7532352, 7904320, 8003124, 8892360, 9415440, 10003905, 10670832, 11856480, 12553920, 13338540, 14227776, 16006248, 17784720, 18830880, 20007810, 21341664, 23712960, 26677080, 32012496, 35569440, 37661760, 40015620, 42683328, 53354160, 64024992, 71138880, 80031240, 106708320, 128049984, 160062480, 213416640, 320124960, 640249920]

約数ペア:

[(1, 640249920), (2, 320124960), (3, 213416640), (4, 160062480), (5, 128049984), (6, 106708320), (8, 80031240), (9, 71138880), (10, 64024992), (12, 53354160), (15, 42683328), (16, 40015620), (17, 37661760), (18, 35569440), (20, 32012496), (24, 26677080), (27, 23712960), (30, 21341664), (32, 20007810), (34, 18830880), (36, 17784720), (40, 16006248), (45, 14227776), (48, 13338540), (51, 12553920), (54, 11856480), (60, 10670832), (64, 10003905), (68, 9415440), (72, 8892360), (80, 8003124), (81, 7904320), (85, 7532352), (90, 7113888), (96, 6669270), (102, 6276960), (108, 5928240), (120, 5335416), (135, 4742592), (136, 4707720), (144, 4446180), (153, 4184640), (160, 4001562), (162, 3952160), (170, 3766176), (180, 3556944), (192, 3334635), (204, 3138480), (216, 2964120), (240, 2667708), (255, 2510784), (270, 2371296), (272, 2353860), (288, 2223090), (306, 2092320), (320, 2000781), (324, 1976080), (340, 1883088), (360, 1778472), (405, 1580864), (408, 1569240), (432, 1482060), (459, 1394880), (480, 1333854), (510, 1255392), (540, 1185648), (544, 1176930), (576, 1111545), (612, 1046160), (648, 988040), (680, 941544), (720, 889236), (765, 836928), (810, 790432), (816, 784620), (864, 741030), (918, 697440), (960, 666927), (1020, 627696), (1080, 592824), (1088, 588465), (1224, 523080), (1296, 494020), (1360, 470772), (1377, 464960), (1440, 444618), (1453, 440640), (1530, 418464), (1620, 395216), (1632, 392310), (1728, 370515), (1836, 348720), (2040, 313848), (2160, 296412), (2295, 278976), (2448, 261540), (2592, 247010), (2720, 235386), (2754, 232480), (2880, 222309), (2906, 220320), (3060, 209232), (3240, 197608), (3264, 196155), (3672, 174360), (4080, 156924), (4320, 148206), (4359, 146880), (4590, 139488), (4896, 130770), (5184, 123505), (5440, 117693), (5508, 116240), (5812, 110160), (6120, 104616), (6480, 98804), (6885, 92992), (7265, 88128), (7344, 87180), (8160, 78462), (8640, 74103), (8718, 73440), (9180, 69744), (9792, 65385), (11016, 58120), (11624, 55080), (12240, 52308), (12960, 49402), (13077, 48960), (13770, 46496), (14530, 44064), (14688, 43590), (16320, 39231), (17436, 36720), (18360, 34872), (21795, 29376), (22032, 29060), (23248, 27540), (24480, 26154), (24701, 25920)]