21080804

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{2693}}^1$

素因数の和:2819

約数の個数: 24

約数和(自身を含む): 39224640

約数和(自身を除く): 18143836

約数列:

[1, 2, 4, 19, 38, 76, 103, 206, 412, 1957, 2693, 3914, 5386, 7828, 10772, 51167, 102334, 204668, 277379, 554758, 1109516, 5270201, 10540402, 21080804]

約数ペア:

[(1, 21080804), (2, 10540402), (4, 5270201), (19, 1109516), (38, 554758), (76, 277379), (103, 204668), (206, 102334), (412, 51167), (1957, 10772), (2693, 7828), (3914, 5386)]