218400705

素因数分解:

$3^4\times 5^1\times {\mathrm{539261}}^1$

素因数の和:539278

約数の個数: 20

約数和(自身を含む): 391504212

約数和(自身を除く): 173103507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 539261, 1617783, 2696305, 4853349, 8088915, 14560047, 24266745, 43680141, 72800235, 218400705]

約数ペア:

[(1, 218400705), (3, 72800235), (5, 43680141), (9, 24266745), (15, 14560047), (27, 8088915), (45, 4853349), (81, 2696305), (135, 1617783), (405, 539261)]