1613125

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 20

約数和(自身を含む): 2108700

約数和(自身を除く): 495575

約数列:

[1, 5, 25, 29, 89, 125, 145, 445, 625, 725, 2225, 2581, 3625, 11125, 12905, 18125, 55625, 64525, 322625, 1613125]

約数ペア:

[(1, 1613125), (5, 322625), (25, 64525), (29, 55625), (89, 18125), (125, 12905), (145, 11125), (445, 3625), (625, 2581), (725, 2225)]