20517731

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:470

約数の個数: 16

約数和(自身を含む): 22819104

約数和(自身を除く): 2301373

約数列:

[1, 13, 53, 97, 307, 689, 1261, 3991, 5141, 16271, 29779, 66833, 211523, 387127, 1578287, 20517731]

約数ペア:

[(1, 20517731), (13, 1578287), (53, 387127), (97, 211523), (307, 66833), (689, 29779), (1261, 16271), (3991, 5141)]