640301280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1163}}^1$

素因数の和:1249

約数の個数: 192

約数和(自身を含む): 2140121088

約数和(自身を除く): 1499819808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 37, 40, 48, 60, 62, 74, 80, 93, 96, 111, 120, 124, 148, 155, 160, 185, 186, 222, 240, 248, 296, 310, 370, 372, 444, 465, 480, 496, 555, 592, 620, 740, 744, 888, 930, 992, 1110, 1147, 1163, 1184, 1240, 1480, 1488, 1776, 1860, 2220, 2294, 2326, 2480, 2960, 2976, 3441, 3489, 3552, 3720, 4440, 4588, 4652, 4960, 5735, 5815, 5920, 6882, 6978, 7440, 8880, 9176, 9304, 11470, 11630, 13764, 13956, 14880, 17205, 17445, 17760, 18352, 18608, 22940, 23260, 27528, 27912, 34410, 34890, 36053, 36704, 37216, 43031, 45880, 46520, 55056, 55824, 68820, 69780, 72106, 86062, 91760, 93040, 108159, 110112, 111648, 129093, 137640, 139560, 144212, 172124, 180265, 183520, 186080, 215155, 216318, 258186, 275280, 279120, 288424, 344248, 360530, 430310, 432636, 516372, 540795, 550560, 558240, 576848, 645465, 688496, 721060, 860620, 865272, 1032744, 1081590, 1153696, 1290930, 1333961, 1376992, 1442120, 1721240, 1730544, 2065488, 2163180, 2581860, 2667922, 2884240, 3442480, 3461088, 4001883, 4130976, 4326360, 5163720, 5335844, 5768480, 6669805, 6884960, 8003766, 8652720, 10327440, 10671688, 13339610, 16007532, 17305440, 20009415, 20654880, 21343376, 26679220, 32015064, 40018830, 42686752, 53358440, 64030128, 80037660, 106716880, 128060256, 160075320, 213433760, 320150640, 640301280]

約数ペア:

[(1, 640301280), (2, 320150640), (3, 213433760), (4, 160075320), (5, 128060256), (6, 106716880), (8, 80037660), (10, 64030128), (12, 53358440), (15, 42686752), (16, 40018830), (20, 32015064), (24, 26679220), (30, 21343376), (31, 20654880), (32, 20009415), (37, 17305440), (40, 16007532), (48, 13339610), (60, 10671688), (62, 10327440), (74, 8652720), (80, 8003766), (93, 6884960), (96, 6669805), (111, 5768480), (120, 5335844), (124, 5163720), (148, 4326360), (155, 4130976), (160, 4001883), (185, 3461088), (186, 3442480), (222, 2884240), (240, 2667922), (248, 2581860), (296, 2163180), (310, 2065488), (370, 1730544), (372, 1721240), (444, 1442120), (465, 1376992), (480, 1333961), (496, 1290930), (555, 1153696), (592, 1081590), (620, 1032744), (740, 865272), (744, 860620), (888, 721060), (930, 688496), (992, 645465), (1110, 576848), (1147, 558240), (1163, 550560), (1184, 540795), (1240, 516372), (1480, 432636), (1488, 430310), (1776, 360530), (1860, 344248), (2220, 288424), (2294, 279120), (2326, 275280), (2480, 258186), (2960, 216318), (2976, 215155), (3441, 186080), (3489, 183520), (3552, 180265), (3720, 172124), (4440, 144212), (4588, 139560), (4652, 137640), (4960, 129093), (5735, 111648), (5815, 110112), (5920, 108159), (6882, 93040), (6978, 91760), (7440, 86062), (8880, 72106), (9176, 69780), (9304, 68820), (11470, 55824), (11630, 55056), (13764, 46520), (13956, 45880), (14880, 43031), (17205, 37216), (17445, 36704), (17760, 36053), (18352, 34890), (18608, 34410), (22940, 27912), (23260, 27528)]