21718473

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7549}}^1$

素因数の和:7696

約数の個数: 16

約数和(自身を含む): 33340800

約数和(自身を除く): 11622327

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7549, 22647, 52843, 158529, 1034213, 3102639, 7239491, 21718473]

約数ペア:

[(1, 21718473), (3, 7239491), (7, 3102639), (21, 1034213), (137, 158529), (411, 52843), (959, 22647), (2877, 7549)]