17748125

素因数分解:

$5^4\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 20

約数和(自身を含む): 22539660

約数和(自身を除く): 4791535

約数列:

[1, 5, 25, 73, 125, 365, 389, 625, 1825, 1945, 9125, 9725, 28397, 45625, 48625, 141985, 243125, 709925, 3549625, 17748125]

約数ペア:

[(1, 17748125), (5, 3549625), (25, 709925), (73, 243125), (125, 141985), (365, 48625), (389, 45625), (625, 28397), (1825, 9725), (1945, 9125)]