21399810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 53716608

約数和(自身を除く): 32316798

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 53, 86, 106, 129, 159, 215, 258, 265, 313, 318, 430, 530, 626, 645, 795, 939, 1290, 1565, 1590, 1878, 2279, 3130, 4558, 4695, 6837, 9390, 11395, 13459, 13674, 16589, 22790, 26918, 33178, 34185, 40377, 49767, 67295, 68370, 80754, 82945, 99534, 134590, 165890, 201885, 248835, 403770, 497670, 713327, 1426654, 2139981, 3566635, 4279962, 7133270, 10699905, 21399810]

約数ペア:

[(1, 21399810), (2, 10699905), (3, 7133270), (5, 4279962), (6, 3566635), (10, 2139981), (15, 1426654), (30, 713327), (43, 497670), (53, 403770), (86, 248835), (106, 201885), (129, 165890), (159, 134590), (215, 99534), (258, 82945), (265, 80754), (313, 68370), (318, 67295), (430, 49767), (530, 40377), (626, 34185), (645, 33178), (795, 26918), (939, 22790), (1290, 16589), (1565, 13674), (1590, 13459), (1878, 11395), (2279, 9390), (3130, 6837), (4558, 4695)]