640729440

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3803}}^1$

素因数の和:3843

約数の個数: 240

約数和(自身を含む): 2435822928

約数和(自身を除く): 1795093488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 81, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 162, 180, 195, 208, 216, 234, 240, 260, 270, 288, 312, 324, 351, 360, 390, 405, 416, 432, 468, 480, 520, 540, 585, 624, 648, 702, 720, 780, 810, 864, 936, 1040, 1053, 1080, 1170, 1248, 1296, 1404, 1440, 1560, 1620, 1755, 1872, 2080, 2106, 2160, 2340, 2592, 2808, 3120, 3240, 3510, 3744, 3803, 4212, 4320, 4680, 5265, 5616, 6240, 6480, 7020, 7606, 8424, 9360, 10530, 11232, 11409, 12960, 14040, 15212, 16848, 18720, 19015, 21060, 22818, 28080, 30424, 33696, 34227, 38030, 42120, 45636, 49439, 56160, 57045, 60848, 68454, 76060, 84240, 91272, 98878, 102681, 114090, 121696, 136908, 148317, 152120, 168480, 171135, 182544, 197756, 205362, 228180, 247195, 273816, 296634, 304240, 308043, 342270, 365088, 395512, 410724, 444951, 456360, 494390, 513405, 547632, 593268, 608480, 616086, 684540, 741585, 791024, 821448, 889902, 912720, 988780, 1026810, 1095264, 1186536, 1232172, 1334853, 1369080, 1483170, 1540215, 1582048, 1642896, 1779804, 1825440, 1977560, 2053620, 2224755, 2373072, 2464344, 2669706, 2738160, 2966340, 3080430, 3285792, 3559608, 3955120, 4004559, 4107240, 4449510, 4746144, 4928688, 5339412, 5476320, 5932680, 6160860, 6674265, 7119216, 7910240, 8009118, 8214480, 8899020, 9857376, 10678824, 11865360, 12321720, 13348530, 14238432, 16018236, 16428960, 17798040, 20022795, 21357648, 23730720, 24643440, 26697060, 32036472, 35596080, 40045590, 42715296, 49286880, 53394120, 64072944, 71192160, 80091180, 106788240, 128145888, 160182360, 213576480, 320364720, 640729440]

約数ペア:

[(1, 640729440), (2, 320364720), (3, 213576480), (4, 160182360), (5, 128145888), (6, 106788240), (8, 80091180), (9, 71192160), (10, 64072944), (12, 53394120), (13, 49286880), (15, 42715296), (16, 40045590), (18, 35596080), (20, 32036472), (24, 26697060), (26, 24643440), (27, 23730720), (30, 21357648), (32, 20022795), (36, 17798040), (39, 16428960), (40, 16018236), (45, 14238432), (48, 13348530), (52, 12321720), (54, 11865360), (60, 10678824), (65, 9857376), (72, 8899020), (78, 8214480), (80, 8009118), (81, 7910240), (90, 7119216), (96, 6674265), (104, 6160860), (108, 5932680), (117, 5476320), (120, 5339412), (130, 4928688), (135, 4746144), (144, 4449510), (156, 4107240), (160, 4004559), (162, 3955120), (180, 3559608), (195, 3285792), (208, 3080430), (216, 2966340), (234, 2738160), (240, 2669706), (260, 2464344), (270, 2373072), (288, 2224755), (312, 2053620), (324, 1977560), (351, 1825440), (360, 1779804), (390, 1642896), (405, 1582048), (416, 1540215), (432, 1483170), (468, 1369080), (480, 1334853), (520, 1232172), (540, 1186536), (585, 1095264), (624, 1026810), (648, 988780), (702, 912720), (720, 889902), (780, 821448), (810, 791024), (864, 741585), (936, 684540), (1040, 616086), (1053, 608480), (1080, 593268), (1170, 547632), (1248, 513405), (1296, 494390), (1404, 456360), (1440, 444951), (1560, 410724), (1620, 395512), (1755, 365088), (1872, 342270), (2080, 308043), (2106, 304240), (2160, 296634), (2340, 273816), (2592, 247195), (2808, 228180), (3120, 205362), (3240, 197756), (3510, 182544), (3744, 171135), (3803, 168480), (4212, 152120), (4320, 148317), (4680, 136908), (5265, 121696), (5616, 114090), (6240, 102681), (6480, 98878), (7020, 91272), (7606, 84240), (8424, 76060), (9360, 68454), (10530, 60848), (11232, 57045), (11409, 56160), (12960, 49439), (14040, 45636), (15212, 42120), (16848, 38030), (18720, 34227), (19015, 33696), (21060, 30424), (22818, 28080)]