12981760

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{461}}^1$

素因数の和:495

約数の個数: 80

約数和(自身を含む): 34029072

約数和(自身を除く): 21047312

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 461, 512, 640, 704, 880, 922, 1280, 1408, 1760, 1844, 2305, 2560, 2816, 3520, 3688, 4610, 5071, 5632, 7040, 7376, 9220, 10142, 14080, 14752, 18440, 20284, 25355, 28160, 29504, 36880, 40568, 50710, 59008, 73760, 81136, 101420, 118016, 147520, 162272, 202840, 236032, 295040, 324544, 405680, 590080, 649088, 811360, 1180160, 1298176, 1622720, 2596352, 3245440, 6490880, 12981760]

約数ペア:

[(1, 12981760), (2, 6490880), (4, 3245440), (5, 2596352), (8, 1622720), (10, 1298176), (11, 1180160), (16, 811360), (20, 649088), (22, 590080), (32, 405680), (40, 324544), (44, 295040), (55, 236032), (64, 202840), (80, 162272), (88, 147520), (110, 118016), (128, 101420), (160, 81136), (176, 73760), (220, 59008), (256, 50710), (320, 40568), (352, 36880), (440, 29504), (461, 28160), (512, 25355), (640, 20284), (704, 18440), (880, 14752), (922, 14080), (1280, 10142), (1408, 9220), (1760, 7376), (1844, 7040), (2305, 5632), (2560, 5071), (2816, 4610), (3520, 3688)]