20917305

素因数分解:

$3^3\times 5^1\times {\mathrm{154943}}^1$

素因数の和:154957

約数の個数: 16

約数和(自身を含む): 37186560

約数和(自身を除く): 16269255

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154943, 464829, 774715, 1394487, 2324145, 4183461, 6972435, 20917305]

約数ペア:

[(1, 20917305), (3, 6972435), (5, 4183461), (9, 2324145), (15, 1394487), (27, 774715), (45, 464829), (135, 154943)]