850420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 1807848

約数和(自身を除く): 957428

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 421, 505, 842, 1010, 1684, 2020, 2105, 4210, 8420, 42521, 85042, 170084, 212605, 425210, 850420]

約数ペア:

[(1, 850420), (2, 425210), (4, 212605), (5, 170084), (10, 85042), (20, 42521), (101, 8420), (202, 4210), (404, 2105), (421, 2020), (505, 1684), (842, 1010)]