19905974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{6907}}^1$

素因数の和:7051

約数の個数: 16

約数和(自身を含む): 32826816

約数和(自身を除く): 12920842

約数列:

[1, 2, 11, 22, 131, 262, 1441, 2882, 6907, 13814, 75977, 151954, 904817, 1809634, 9952987, 19905974]

約数ペア:

[(1, 19905974), (2, 9952987), (11, 1809634), (22, 904817), (131, 151954), (262, 75977), (1441, 13814), (2882, 6907)]