131490279

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{40471}}^1$

素因数の和:40515

約数の個数: 18

約数和(自身を含む): 200457816

約数和(自身を除く): 68967537

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 40471, 121413, 364239, 768949, 2306847, 6920541, 14610031, 43830093, 131490279]

約数ペア:

[(1, 131490279), (3, 43830093), (9, 14610031), (19, 6920541), (57, 2306847), (171, 768949), (361, 364239), (1083, 121413), (3249, 40471)]