20518155

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1229}}^1$

素因数の和:1300

約数の個数: 48

約数和(自身を含む): 41446080

約数和(自身を除く): 20927925

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 53, 63, 105, 159, 265, 315, 371, 477, 795, 1113, 1229, 1855, 2385, 3339, 3687, 5565, 6145, 8603, 11061, 16695, 18435, 25809, 43015, 55305, 65137, 77427, 129045, 195411, 325685, 387135, 455959, 586233, 977055, 1367877, 2279795, 2931165, 4103631, 6839385, 20518155]

約数ペア:

[(1, 20518155), (3, 6839385), (5, 4103631), (7, 2931165), (9, 2279795), (15, 1367877), (21, 977055), (35, 586233), (45, 455959), (53, 387135), (63, 325685), (105, 195411), (159, 129045), (265, 77427), (315, 65137), (371, 55305), (477, 43015), (795, 25809), (1113, 18435), (1229, 16695), (1855, 11061), (2385, 8603), (3339, 6145), (3687, 5565)]