21893895

素因数分解:

$3^4\times 5^1\times {\mathrm{54059}}^1$

素因数の和:54076

約数の個数: 20

約数和(自身を含む): 39247560

約数和(自身を除く): 17353665

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 54059, 162177, 270295, 486531, 810885, 1459593, 2432655, 4378779, 7297965, 21893895]

約数ペア:

[(1, 21893895), (3, 7297965), (5, 4378779), (9, 2432655), (15, 1459593), (27, 810885), (45, 486531), (81, 270295), (135, 162177), (405, 54059)]