21111610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{647}}^1$

素因数の和:918

約数の個数: 32

約数和(自身を含む): 41150592

約数和(自身を除く): 20038982

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 251, 502, 647, 1255, 1294, 2510, 3235, 3263, 6470, 6526, 8411, 16315, 16822, 32630, 42055, 84110, 162397, 324794, 811985, 1623970, 2111161, 4222322, 10555805, 21111610]

約数ペア:

[(1, 21111610), (2, 10555805), (5, 4222322), (10, 2111161), (13, 1623970), (26, 811985), (65, 324794), (130, 162397), (251, 84110), (502, 42055), (647, 32630), (1255, 16822), (1294, 16315), (2510, 8411), (3235, 6526), (3263, 6470)]