21718311

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8861}}^1$

素因数の和:8926

約数の個数: 16

約数和(自身を含む): 31194240

約数和(自身を除く): 9475929

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8861, 26583, 168359, 381023, 505077, 1143069, 7239437, 21718311]

約数ペア:

[(1, 21718311), (3, 7239437), (19, 1143069), (43, 505077), (57, 381023), (129, 168359), (817, 26583), (2451, 8861)]