20199580

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2399}}^1$

素因数の和:2829

約数の個数: 24

約数和(自身を含む): 42537600

約数和(自身を除く): 22338020

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 2399, 4210, 4798, 8420, 9596, 11995, 23990, 47980, 1009979, 2019958, 4039916, 5049895, 10099790, 20199580]

約数ペア:

[(1, 20199580), (2, 10099790), (4, 5049895), (5, 4039916), (10, 2019958), (20, 1009979), (421, 47980), (842, 23990), (1684, 11995), (2105, 9596), (2399, 8420), (4210, 4798)]