8990480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2741}}^1$

素因数の和:2795

約数の個数: 40

約数和(自身を含む): 21420504

約数和(自身を除く): 12430024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 2741, 3280, 5482, 10964, 13705, 21928, 27410, 43856, 54820, 109640, 112381, 219280, 224762, 449524, 561905, 899048, 1123810, 1798096, 2247620, 4495240, 8990480]

約数ペア:

[(1, 8990480), (2, 4495240), (4, 2247620), (5, 1798096), (8, 1123810), (10, 899048), (16, 561905), (20, 449524), (40, 224762), (41, 219280), (80, 112381), (82, 109640), (164, 54820), (205, 43856), (328, 27410), (410, 21928), (656, 13705), (820, 10964), (1640, 5482), (2741, 3280)]