21679839

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{5861}}^1$

素因数の和:6007

約数の個数: 16

約数和(自身を含む): 32358240

約数和(自身を除く): 10678401

約数列:

[1, 3, 9, 27, 137, 411, 1233, 3699, 5861, 17583, 52749, 158247, 802957, 2408871, 7226613, 21679839]

約数ペア:

[(1, 21679839), (3, 7226613), (9, 2408871), (27, 802957), (137, 158247), (411, 52749), (1233, 17583), (3699, 5861)]