199957820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{243851}}^1$

素因数の和:243901

約数の個数: 24

約数和(自身を含む): 430154928

約数和(自身を除く): 230197108

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 243851, 487702, 975404, 1219255, 2438510, 4877020, 9997891, 19995782, 39991564, 49989455, 99978910, 199957820]

約数ペア:

[(1, 199957820), (2, 99978910), (4, 49989455), (5, 39991564), (10, 19995782), (20, 9997891), (41, 4877020), (82, 2438510), (164, 1219255), (205, 975404), (410, 487702), (820, 243851)]