20974118

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15629}}^1$

素因数の和:15703

約数の個数: 16

約数和(自身を含む): 34886160

約数和(自身を除く): 13912042

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15629, 31258, 171919, 343838, 953369, 1906738, 10487059, 20974118]

約数ペア:

[(1, 20974118), (2, 10487059), (11, 1906738), (22, 953369), (61, 343838), (122, 171919), (671, 31258), (1342, 15629)]