21713125

素因数分解:

$5^4\times 7^2\times {\mathrm{709}}^1$

素因数の和:743

約数の個数: 30

約数和(自身を含む): 31607070

約数和(自身を除く): 9893945

約数列:

[1, 5, 7, 25, 35, 49, 125, 175, 245, 625, 709, 875, 1225, 3545, 4375, 4963, 6125, 17725, 24815, 30625, 34741, 88625, 124075, 173705, 443125, 620375, 868525, 3101875, 4342625, 21713125]

約数ペア:

[(1, 21713125), (5, 4342625), (7, 3101875), (25, 868525), (35, 620375), (49, 443125), (125, 173705), (175, 124075), (245, 88625), (625, 34741), (709, 30625), (875, 24815), (1225, 17725), (3545, 6125), (4375, 4963)]