20202749

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 5077891

約数列:

[1, 7, 17, 49, 79, 119, 307, 553, 833, 1343, 2149, 3871, 5219, 9401, 15043, 24253, 36533, 65807, 169771, 255731, 412301, 1188397, 2886107, 20202749]

約数ペア:

[(1, 20202749), (7, 2886107), (17, 1188397), (49, 412301), (79, 255731), (119, 169771), (307, 65807), (553, 36533), (833, 24253), (1343, 15043), (2149, 9401), (3871, 5219)]