21156627

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1\times {\mathrm{661}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 28979712

約数和(自身を除く): 7823085

約数列:

[1, 3, 47, 141, 227, 661, 681, 1983, 10669, 31067, 32007, 93201, 150047, 450141, 7052209, 21156627]

約数ペア:

[(1, 21156627), (3, 7052209), (47, 450141), (141, 150047), (227, 93201), (661, 32007), (681, 31067), (1983, 10669)]