66106820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{254257}}^1$

素因数の和:254279

約数の個数: 24

約数和(自身を含む): 149503704

約数和(自身を除く): 83396884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 254257, 508514, 1017028, 1271285, 2542570, 3305341, 5085140, 6610682, 13221364, 16526705, 33053410, 66106820]

約数ペア:

[(1, 66106820), (2, 33053410), (4, 16526705), (5, 13221364), (10, 6610682), (13, 5085140), (20, 3305341), (26, 2542570), (52, 1271285), (65, 1017028), (130, 508514), (260, 254257)]