81617276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{2441}}^1$

素因数の和:3101

約数の個数: 24

約数和(自身を含む): 154119504

約数和(自身を除く): 72502228

約数列:

[1, 2, 4, 13, 26, 52, 643, 1286, 2441, 2572, 4882, 8359, 9764, 16718, 31733, 33436, 63466, 126932, 1569563, 3139126, 6278252, 20404319, 40808638, 81617276]

約数ペア:

[(1, 81617276), (2, 40808638), (4, 20404319), (13, 6278252), (26, 3139126), (52, 1569563), (643, 126932), (1286, 63466), (2441, 33436), (2572, 31733), (4882, 16718), (8359, 9764)]