401065220

素因数分解:

$2^2\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{10289}}^1$

素因数の和:12247

約数の個数: 24

約数和(自身を含む): 842751000

約数和(自身を除く): 441685780

約数列:

[1, 2, 4, 5, 10, 20, 1949, 3898, 7796, 9745, 10289, 19490, 20578, 38980, 41156, 51445, 102890, 205780, 20053261, 40106522, 80213044, 100266305, 200532610, 401065220]

約数ペア:

[(1, 401065220), (2, 200532610), (4, 100266305), (5, 80213044), (10, 40106522), (20, 20053261), (1949, 205780), (3898, 102890), (7796, 51445), (9745, 41156), (10289, 38980), (19490, 20578)]