207918980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{2579}}^1$

素因数の和:2756

約数の個数: 48

約数和(自身を含む): 455112000

約数和(自身を除く): 247193020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 1390, 2579, 2780, 4031, 5158, 8062, 10316, 12895, 16124, 20155, 25790, 40310, 51580, 74791, 80620, 149582, 299164, 358481, 373955, 716962, 747910, 1433924, 1495820, 1792405, 3584810, 7169620, 10395949, 20791898, 41583796, 51979745, 103959490, 207918980]

約数ペア:

[(1, 207918980), (2, 103959490), (4, 51979745), (5, 41583796), (10, 20791898), (20, 10395949), (29, 7169620), (58, 3584810), (116, 1792405), (139, 1495820), (145, 1433924), (278, 747910), (290, 716962), (556, 373955), (580, 358481), (695, 299164), (1390, 149582), (2579, 80620), (2780, 74791), (4031, 51580), (5158, 40310), (8062, 25790), (10316, 20155), (12895, 16124)]