20450493

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{587}}^1$

素因数の和:686

約数の個数: 36

約数和(自身を含む): 34856640

約数和(自身を除く): 14406147

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 587, 711, 1659, 1761, 3871, 4109, 4977, 5283, 11613, 12327, 28763, 34839, 36981, 46373, 86289, 139119, 258867, 324611, 417357, 973833, 2272277, 2921499, 6816831, 20450493]

約数ペア:

[(1, 20450493), (3, 6816831), (7, 2921499), (9, 2272277), (21, 973833), (49, 417357), (63, 324611), (79, 258867), (147, 139119), (237, 86289), (441, 46373), (553, 36981), (587, 34839), (711, 28763), (1659, 12327), (1761, 11613), (3871, 5283), (4109, 4977)]