81317901

素因数分解:

$3^1\times 7^2\times {\mathrm{641}}^1\times {\mathrm{863}}^1$

素因数の和:1521

約数の個数: 24

約数和(自身を含む): 126468864

約数和(自身を除く): 45150963

約数列:

[1, 3, 7, 21, 49, 147, 641, 863, 1923, 2589, 4487, 6041, 13461, 18123, 31409, 42287, 94227, 126861, 553183, 1659549, 3872281, 11616843, 27105967, 81317901]

約数ペア:

[(1, 81317901), (3, 27105967), (7, 11616843), (21, 3872281), (49, 1659549), (147, 553183), (641, 126861), (863, 94227), (1923, 42287), (2589, 31409), (4487, 18123), (6041, 13461)]