20214945

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 37120512

約数和(自身を除く): 16905567

約数列:

[1, 3, 5, 9, 15, 31, 43, 45, 93, 129, 155, 215, 279, 337, 387, 465, 645, 1011, 1333, 1395, 1685, 1935, 3033, 3999, 5055, 6665, 10447, 11997, 14491, 15165, 19995, 31341, 43473, 52235, 59985, 72455, 94023, 130419, 156705, 217365, 449221, 470115, 652095, 1347663, 2246105, 4042989, 6738315, 20214945]

約数ペア:

[(1, 20214945), (3, 6738315), (5, 4042989), (9, 2246105), (15, 1347663), (31, 652095), (43, 470115), (45, 449221), (93, 217365), (129, 156705), (155, 130419), (215, 94023), (279, 72455), (337, 59985), (387, 52235), (465, 43473), (645, 31341), (1011, 19995), (1333, 15165), (1395, 14491), (1685, 11997), (1935, 10447), (3033, 6665), (3999, 5055)]