81921710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{630167}}^1$

素因数の和:630187

約数の個数: 16

約数和(自身を含む): 158802336

約数和(自身を除く): 76880626

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 630167, 1260334, 3150835, 6301670, 8192171, 16384342, 40960855, 81921710]

約数ペア:

[(1, 81921710), (2, 40960855), (5, 16384342), (10, 8192171), (13, 6301670), (26, 3150835), (65, 1260334), (130, 630167)]