68517940

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{21821}}^1$

素因数の和:21987

約数の個数: 24

約数和(自身を含む): 144810792

約数和(自身を除く): 76292852

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 21821, 43642, 87284, 109105, 218210, 436420, 3425897, 6851794, 13703588, 17129485, 34258970, 68517940]

約数ペア:

[(1, 68517940), (2, 34258970), (4, 17129485), (5, 13703588), (10, 6851794), (20, 3425897), (157, 436420), (314, 218210), (628, 109105), (785, 87284), (1570, 43642), (3140, 21821)]