21425535

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 39297024

約数和(自身を除く): 17871489

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 127, 163, 207, 345, 381, 489, 635, 815, 1035, 1143, 1467, 1905, 2445, 2921, 3749, 5715, 7335, 8763, 11247, 14605, 18745, 20701, 26289, 33741, 43815, 56235, 62103, 103505, 131445, 168705, 186309, 310515, 476123, 931545, 1428369, 2380615, 4285107, 7141845, 21425535]

約数ペア:

[(1, 21425535), (3, 7141845), (5, 4285107), (9, 2380615), (15, 1428369), (23, 931545), (45, 476123), (69, 310515), (115, 186309), (127, 168705), (163, 131445), (207, 103505), (345, 62103), (381, 56235), (489, 43815), (635, 33741), (815, 26289), (1035, 20701), (1143, 18745), (1467, 14605), (1905, 11247), (2445, 8763), (2921, 7335), (3749, 5715)]