21527937

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{4357}}^1$

素因数の和:4430

約数の個数: 20

約数和(自身を含む): 32693716

約数和(自身を除く): 11165779

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4357, 4941, 13071, 39213, 117639, 265777, 352917, 797331, 2391993, 7175979, 21527937]

約数ペア:

[(1, 21527937), (3, 7175979), (9, 2391993), (27, 797331), (61, 352917), (81, 265777), (183, 117639), (549, 39213), (1647, 13071), (4357, 4941)]