139687820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{170351}}^1$

素因数の和:170401

約数の個数: 24

約数和(自身を含む): 300500928

約数和(自身を除く): 160813108

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 170351, 340702, 681404, 851755, 1703510, 3407020, 6984391, 13968782, 27937564, 34921955, 69843910, 139687820]

約数ペア:

[(1, 139687820), (2, 69843910), (4, 34921955), (5, 27937564), (10, 13968782), (20, 6984391), (41, 3407020), (82, 1703510), (164, 851755), (205, 681404), (410, 340702), (820, 170351)]