21007246

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{2441}}^1$

素因数の和:2787

約数の個数: 16

約数和(自身を含む): 34051248

約数和(自身を除く): 13044002

約数列:

[1, 2, 13, 26, 331, 662, 2441, 4303, 4882, 8606, 31733, 63466, 807971, 1615942, 10503623, 21007246]

約数ペア:

[(1, 21007246), (2, 10503623), (13, 1615942), (26, 807971), (331, 63466), (662, 31733), (2441, 8606), (4303, 4882)]