25523620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{20921}}^1$

素因数の和:20991

約数の個数: 24

約数和(自身を含む): 54480888

約数和(自身を除く): 28957268

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 20921, 41842, 83684, 104605, 209210, 418420, 1276181, 2552362, 5104724, 6380905, 12761810, 25523620]

約数ペア:

[(1, 25523620), (2, 12761810), (4, 6380905), (5, 5104724), (10, 2552362), (20, 1276181), (61, 418420), (122, 209210), (244, 104605), (305, 83684), (610, 41842), (1220, 20921)]