20772880

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3557}}^1$

素因数の和:3643

約数の個数: 40

約数和(自身を含む): 48972312

約数和(自身を除く): 28199432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3557, 5840, 7114, 14228, 17785, 28456, 35570, 56912, 71140, 142280, 259661, 284560, 519322, 1038644, 1298305, 2077288, 2596610, 4154576, 5193220, 10386440, 20772880]

約数ペア:

[(1, 20772880), (2, 10386440), (4, 5193220), (5, 4154576), (8, 2596610), (10, 2077288), (16, 1298305), (20, 1038644), (40, 519322), (73, 284560), (80, 259661), (146, 142280), (292, 71140), (365, 56912), (584, 35570), (730, 28456), (1168, 17785), (1460, 14228), (2920, 7114), (3557, 5840)]