20678895

素因数分解:

$3^4\times 5^1\times {\mathrm{51059}}^1$

素因数の和:51076

約数の個数: 20

約数和(自身を含む): 37069560

約数和(自身を除く): 16390665

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51059, 153177, 255295, 459531, 765885, 1378593, 2297655, 4135779, 6892965, 20678895]

約数ペア:

[(1, 20678895), (3, 6892965), (5, 4135779), (9, 2297655), (15, 1378593), (27, 765885), (45, 459531), (81, 255295), (135, 153177), (405, 51059)]