16564375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1559}}^1$

素因数の和:1596

約数の個数: 20

約数和(自身を含む): 21930480

約数和(自身を除く): 5366105

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1559, 2125, 7795, 10625, 26503, 38975, 132515, 194875, 662575, 974375, 3312875, 16564375]

約数ペア:

[(1, 16564375), (5, 3312875), (17, 974375), (25, 662575), (85, 194875), (125, 132515), (425, 38975), (625, 26503), (1559, 10625), (2125, 7795)]