9968125

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:450

約数の個数: 20

約数和(自身を含む): 12792780

約数和(自身を除く): 2824655

約数列:

[1, 5, 25, 41, 125, 205, 389, 625, 1025, 1945, 5125, 9725, 15949, 25625, 48625, 79745, 243125, 398725, 1993625, 9968125]

約数ペア:

[(1, 9968125), (5, 1993625), (25, 398725), (41, 243125), (125, 79745), (205, 48625), (389, 25625), (625, 15949), (1025, 9725), (1945, 5125)]