21790359

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2089}}^1$

素因数の和:2175

約数の個数: 24

約数和(自身を含む): 33690800

約数和(自身を除く): 11900441

約数列:

[1, 3, 9, 19, 57, 61, 171, 183, 549, 1159, 2089, 3477, 6267, 10431, 18801, 39691, 119073, 127429, 357219, 382287, 1146861, 2421151, 7263453, 21790359]

約数ペア:

[(1, 21790359), (3, 7263453), (9, 2421151), (19, 1146861), (57, 382287), (61, 357219), (171, 127429), (183, 119073), (549, 39691), (1159, 18801), (2089, 10431), (3477, 6267)]