81072640

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2879}}^1$

素因数の和:2913

約数の個数: 80

約数和(自身を含む): 212129280

約数和(自身を除く): 131056640

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, 512, 640, 704, 880, 1280, 1408, 1760, 2560, 2816, 2879, 3520, 5632, 5758, 7040, 11516, 14080, 14395, 23032, 28160, 28790, 31669, 46064, 57580, 63338, 92128, 115160, 126676, 158345, 184256, 230320, 253352, 316690, 368512, 460640, 506704, 633380, 737024, 921280, 1013408, 1266760, 1474048, 1842560, 2026816, 2533520, 3685120, 4053632, 5067040, 7370240, 8107264, 10134080, 16214528, 20268160, 40536320, 81072640]

約数ペア:

[(1, 81072640), (2, 40536320), (4, 20268160), (5, 16214528), (8, 10134080), (10, 8107264), (11, 7370240), (16, 5067040), (20, 4053632), (22, 3685120), (32, 2533520), (40, 2026816), (44, 1842560), (55, 1474048), (64, 1266760), (80, 1013408), (88, 921280), (110, 737024), (128, 633380), (160, 506704), (176, 460640), (220, 368512), (256, 316690), (320, 253352), (352, 230320), (440, 184256), (512, 158345), (640, 126676), (704, 115160), (880, 92128), (1280, 63338), (1408, 57580), (1760, 46064), (2560, 31669), (2816, 28790), (2879, 28160), (3520, 23032), (5632, 14395), (5758, 14080), (7040, 11516)]