18620625

素因数分解:

$3^1\times 5^4\times {\mathrm{9931}}^1$

素因数の和:9954

約数の個数: 20

約数和(自身を含む): 31027568

約数和(自身を除く): 12406943

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 625, 1875, 9931, 29793, 49655, 148965, 248275, 744825, 1241375, 3724125, 6206875, 18620625]

約数ペア:

[(1, 18620625), (3, 6206875), (5, 3724125), (15, 1241375), (25, 744825), (75, 248275), (125, 148965), (375, 49655), (625, 29793), (1875, 9931)]