12217420

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1451}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 25735248

約数和(自身を除く): 13517828

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1451, 1684, 2105, 2902, 4210, 5804, 7255, 8420, 14510, 29020, 610871, 1221742, 2443484, 3054355, 6108710, 12217420]

約数ペア:

[(1, 12217420), (2, 6108710), (4, 3054355), (5, 2443484), (10, 1221742), (20, 610871), (421, 29020), (842, 14510), (1451, 8420), (1684, 7255), (2105, 5804), (2902, 4210)]