28258713

素因数分解:

$3^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 49795200

約数和(自身を除く): 21536487

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 243, 259, 333, 449, 567, 777, 999, 1347, 1701, 2331, 2997, 3143, 4041, 6993, 8991, 9429, 12123, 16613, 20979, 28287, 36369, 49839, 62937, 84861, 109107, 116291, 149517, 254583, 348873, 448551, 763749, 1046619, 1345653, 3139857, 4036959, 9419571, 28258713]

約数ペア:

[(1, 28258713), (3, 9419571), (7, 4036959), (9, 3139857), (21, 1345653), (27, 1046619), (37, 763749), (63, 448551), (81, 348873), (111, 254583), (189, 149517), (243, 116291), (259, 109107), (333, 84861), (449, 62937), (567, 49839), (777, 36369), (999, 28287), (1347, 20979), (1701, 16613), (2331, 12123), (2997, 9429), (3143, 8991), (4041, 6993)]