21961329

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{2459}}^1$

素因数の和:2704

約数の個数: 16

約数和(自身を含む): 31684800

約数和(自身を除く): 9723471

約数列:

[1, 3, 13, 39, 229, 687, 2459, 2977, 7377, 8931, 31967, 95901, 563111, 1689333, 7320443, 21961329]

約数ペア:

[(1, 21961329), (3, 7320443), (13, 1689333), (39, 563111), (229, 95901), (687, 31967), (2459, 8931), (2977, 7377)]