20648290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5477}}^1$

素因数の和:5526

約数の個数: 32

約数和(自身を含む): 41413680

約数和(自身を除く): 20765390

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 5477, 10954, 27385, 54770, 71201, 142402, 158833, 317666, 356005, 712010, 794165, 1588330, 2064829, 4129658, 10324145, 20648290]

約数ペア:

[(1, 20648290), (2, 10324145), (5, 4129658), (10, 2064829), (13, 1588330), (26, 794165), (29, 712010), (58, 356005), (65, 317666), (130, 158833), (145, 142402), (290, 71201), (377, 54770), (754, 27385), (1885, 10954), (3770, 5477)]