7072821

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{857}}^1$

素因数の和:1001

約数の個数: 24

約数和(自身を含む): 11778624

約数和(自身を除く): 4705803

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 857, 917, 1179, 2571, 2751, 5999, 7713, 8253, 17997, 53991, 112267, 336801, 785869, 1010403, 2357607, 7072821]

約数ペア:

[(1, 7072821), (3, 2357607), (7, 1010403), (9, 785869), (21, 336801), (63, 112267), (131, 53991), (393, 17997), (857, 8253), (917, 7713), (1179, 5999), (2571, 2751)]