21154797

素因数分解:

$3^3\times {\mathrm{131}}^1\times {\mathrm{5981}}^1$

素因数の和:6121

約数の個数: 16

約数和(自身を含む): 31584960

約数和(自身を除く): 10430163

約数列:

[1, 3, 9, 27, 131, 393, 1179, 3537, 5981, 17943, 53829, 161487, 783511, 2350533, 7051599, 21154797]

約数ペア:

[(1, 21154797), (3, 7051599), (9, 2350533), (27, 783511), (131, 161487), (393, 53829), (1179, 17943), (3537, 5981)]