20235620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 24217180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 251, 278, 290, 502, 556, 580, 695, 1004, 1255, 1390, 2510, 2780, 4031, 5020, 7279, 8062, 14558, 16124, 20155, 29116, 34889, 36395, 40310, 69778, 72790, 80620, 139556, 145580, 174445, 348890, 697780, 1011781, 2023562, 4047124, 5058905, 10117810, 20235620]

約数ペア:

[(1, 20235620), (2, 10117810), (4, 5058905), (5, 4047124), (10, 2023562), (20, 1011781), (29, 697780), (58, 348890), (116, 174445), (139, 145580), (145, 139556), (251, 80620), (278, 72790), (290, 69778), (502, 40310), (556, 36395), (580, 34889), (695, 29116), (1004, 20155), (1255, 16124), (1390, 14558), (2510, 8062), (2780, 7279), (4031, 5020)]