28305220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23201}}^1$

素因数の和:23271

約数の個数: 24

約数和(自身を含む): 60418008

約数和(自身を除く): 32112788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 23201, 46402, 92804, 116005, 232010, 464020, 1415261, 2830522, 5661044, 7076305, 14152610, 28305220]

約数ペア:

[(1, 28305220), (2, 14152610), (4, 7076305), (5, 5661044), (10, 2830522), (20, 1415261), (61, 464020), (122, 232010), (244, 116005), (305, 92804), (610, 46402), (1220, 23201)]