25212020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2557}}^1$

素因数の和:2612

約数の個数: 48

約数和(自身を含む): 58015440

約数和(自身を除く): 32803420

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2465, 2557, 4930, 5114, 9860, 10228, 12785, 25570, 43469, 51140, 74153, 86938, 148306, 173876, 217345, 296612, 370765, 434690, 741530, 869380, 1260601, 1483060, 2521202, 5042404, 6303005, 12606010, 25212020]

約数ペア:

[(1, 25212020), (2, 12606010), (4, 6303005), (5, 5042404), (10, 2521202), (17, 1483060), (20, 1260601), (29, 869380), (34, 741530), (58, 434690), (68, 370765), (85, 296612), (116, 217345), (145, 173876), (170, 148306), (290, 86938), (340, 74153), (493, 51140), (580, 43469), (986, 25570), (1972, 12785), (2465, 10228), (2557, 9860), (4930, 5114)]