208197820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{547889}}^1$

素因数の和:547917

約数の個数: 24

約数和(自身を含む): 460227600

約数和(自身を除く): 252029780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 547889, 1095778, 2191556, 2739445, 5478890, 10409891, 10957780, 20819782, 41639564, 52049455, 104098910, 208197820]

約数ペア:

[(1, 208197820), (2, 104098910), (4, 52049455), (5, 41639564), (10, 20819782), (19, 10957780), (20, 10409891), (38, 5478890), (76, 2739445), (95, 2191556), (190, 1095778), (380, 547889)]