28181120

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4003}}^1$

素因数の和:4033

約数の個数: 64

約数和(自身を含む): 73513440

約数和(自身を除く): 45332320

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, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 4003, 7040, 8006, 16012, 20015, 32024, 40030, 44033, 64048, 80060, 88066, 128096, 160120, 176132, 220165, 256192, 320240, 352264, 440330, 512384, 640480, 704528, 880660, 1280960, 1409056, 1761320, 2561920, 2818112, 3522640, 5636224, 7045280, 14090560, 28181120]

約数ペア:

[(1, 28181120), (2, 14090560), (4, 7045280), (5, 5636224), (8, 3522640), (10, 2818112), (11, 2561920), (16, 1761320), (20, 1409056), (22, 1280960), (32, 880660), (40, 704528), (44, 640480), (55, 512384), (64, 440330), (80, 352264), (88, 320240), (110, 256192), (128, 220165), (160, 176132), (176, 160120), (220, 128096), (320, 88066), (352, 80060), (440, 64048), (640, 44033), (704, 40030), (880, 32024), (1408, 20015), (1760, 16012), (3520, 8006), (4003, 7040)]