20994225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{39989}}^1$

素因数の和:40009

約数の個数: 24

約数和(自身を含む): 39670080

約数和(自身を除く): 18675855

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 39989, 119967, 199945, 279923, 599835, 839769, 999725, 1399615, 2999175, 4198845, 6998075, 20994225]

約数ペア:

[(1, 20994225), (3, 6998075), (5, 4198845), (7, 2999175), (15, 1399615), (21, 999725), (25, 839769), (35, 599835), (75, 279923), (105, 199945), (175, 119967), (525, 39989)]