1640139760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{71}}^2\times {\mathrm{83}}^1$

素因数の和:252

約数の個数: 180

約数和(自身を含む): 4553474184

約数和(自身を除く): 2913334424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 71, 80, 83, 98, 112, 140, 142, 166, 196, 245, 280, 284, 332, 355, 392, 415, 490, 497, 560, 568, 581, 664, 710, 784, 830, 980, 994, 1136, 1162, 1328, 1420, 1660, 1960, 1988, 2324, 2485, 2840, 2905, 3320, 3479, 3920, 3976, 4067, 4648, 4970, 5041, 5680, 5810, 5893, 6640, 6958, 7952, 8134, 9296, 9940, 10082, 11620, 11786, 13916, 16268, 17395, 19880, 20164, 20335, 23240, 23572, 25205, 27832, 29465, 32536, 34790, 35287, 39760, 40328, 40670, 41251, 46480, 47144, 50410, 55664, 58930, 65072, 69580, 70574, 80656, 81340, 82502, 94288, 100820, 117860, 139160, 141148, 162680, 165004, 176435, 201640, 206255, 235720, 247009, 278320, 282296, 288757, 325360, 330008, 352870, 403280, 412510, 418403, 471440, 494018, 564592, 577514, 660016, 705740, 825020, 836806, 988036, 1155028, 1235045, 1411480, 1443785, 1650040, 1673612, 1976072, 2092015, 2310056, 2470090, 2822960, 2887570, 2928821, 3300080, 3347224, 3952144, 4184030, 4620112, 4940180, 5775140, 5857642, 6694448, 8368060, 9880360, 11550280, 11715284, 14644105, 16736120, 19760720, 20501747, 23100560, 23430568, 29288210, 33472240, 41003494, 46861136, 58576420, 82006988, 102508735, 117152840, 164013976, 205017470, 234305680, 328027952, 410034940, 820069880, 1640139760]

約数ペア:

[(1, 1640139760), (2, 820069880), (4, 410034940), (5, 328027952), (7, 234305680), (8, 205017470), (10, 164013976), (14, 117152840), (16, 102508735), (20, 82006988), (28, 58576420), (35, 46861136), (40, 41003494), (49, 33472240), (56, 29288210), (70, 23430568), (71, 23100560), (80, 20501747), (83, 19760720), (98, 16736120), (112, 14644105), (140, 11715284), (142, 11550280), (166, 9880360), (196, 8368060), (245, 6694448), (280, 5857642), (284, 5775140), (332, 4940180), (355, 4620112), (392, 4184030), (415, 3952144), (490, 3347224), (497, 3300080), (560, 2928821), (568, 2887570), (581, 2822960), (664, 2470090), (710, 2310056), (784, 2092015), (830, 1976072), (980, 1673612), (994, 1650040), (1136, 1443785), (1162, 1411480), (1328, 1235045), (1420, 1155028), (1660, 988036), (1960, 836806), (1988, 825020), (2324, 705740), (2485, 660016), (2840, 577514), (2905, 564592), (3320, 494018), (3479, 471440), (3920, 418403), (3976, 412510), (4067, 403280), (4648, 352870), (4970, 330008), (5041, 325360), (5680, 288757), (5810, 282296), (5893, 278320), (6640, 247009), (6958, 235720), (7952, 206255), (8134, 201640), (9296, 176435), (9940, 165004), (10082, 162680), (11620, 141148), (11786, 139160), (13916, 117860), (16268, 100820), (17395, 94288), (19880, 82502), (20164, 81340), (20335, 80656), (23240, 70574), (23572, 69580), (25205, 65072), (27832, 58930), (29465, 55664), (32536, 50410), (34790, 47144), (35287, 46480), (39760, 41251), (40328, 40670)]