20328507

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1203

約数の個数: 24

約数和(自身を含む): 30831840

約数和(自身を除く): 10503333

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1097, 2059, 3291, 6177, 9873, 18531, 31813, 77887, 95439, 233661, 286317, 700983, 2258723, 6776169, 20328507]

約数ペア:

[(1, 20328507), (3, 6776169), (9, 2258723), (29, 700983), (71, 286317), (87, 233661), (213, 95439), (261, 77887), (639, 31813), (1097, 18531), (2059, 9873), (3291, 6177)]