16908125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{2081}}^1$

素因数の和:2114

約数の個数: 20

約数和(自身を含む): 22764588

約数和(自身を除く): 5856463

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 2081, 8125, 10405, 27053, 52025, 135265, 260125, 676325, 1300625, 3381625, 16908125]

約数ペア:

[(1, 16908125), (5, 3381625), (13, 1300625), (25, 676325), (65, 260125), (125, 135265), (325, 52025), (625, 27053), (1625, 10405), (2081, 8125)]