51838660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 113601600

約数和(自身を除く): 61762940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 643, 695, 1286, 1390, 2572, 2780, 3215, 4031, 6430, 8062, 12860, 16124, 18647, 20155, 37294, 40310, 74588, 80620, 89377, 93235, 178754, 186470, 357508, 372940, 446885, 893770, 1787540, 2591933, 5183866, 10367732, 12959665, 25919330, 51838660]

約数ペア:

[(1, 51838660), (2, 25919330), (4, 12959665), (5, 10367732), (10, 5183866), (20, 2591933), (29, 1787540), (58, 893770), (116, 446885), (139, 372940), (145, 357508), (278, 186470), (290, 178754), (556, 93235), (580, 89377), (643, 80620), (695, 74588), (1286, 40310), (1390, 37294), (2572, 20155), (2780, 18647), (3215, 16124), (4031, 12860), (6430, 8062)]