8257420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4639}}^1$

素因数の和:4737

約数の個数: 24

約数和(自身を含む): 17539200

約数和(自身を除く): 9281780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 4639, 9278, 18556, 23195, 46390, 92780, 412871, 825742, 1651484, 2064355, 4128710, 8257420]

約数ペア:

[(1, 8257420), (2, 4128710), (4, 2064355), (5, 1651484), (10, 825742), (20, 412871), (89, 92780), (178, 46390), (356, 23195), (445, 18556), (890, 9278), (1780, 4639)]