78720975

素因数分解:

$3^2\times 5^2\times {\mathrm{349871}}^1$

素因数の和:349887

約数の個数: 18

約数和(自身を含む): 140998416

約数和(自身を除く): 62277441

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 349871, 1049613, 1749355, 3148839, 5248065, 8746775, 15744195, 26240325, 78720975]

約数ペア:

[(1, 78720975), (3, 26240325), (5, 15744195), (9, 8746775), (15, 5248065), (25, 3148839), (45, 1749355), (75, 1049613), (225, 349871)]