20976825

素因数分解:

$3^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{719}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 13842375

約数列:

[1, 3, 5, 15, 25, 75, 389, 719, 1167, 1945, 2157, 3595, 5835, 9725, 10785, 17975, 29175, 53925, 279691, 839073, 1398455, 4195365, 6992275, 20976825]

約数ペア:

[(1, 20976825), (3, 6992275), (5, 4195365), (15, 1398455), (25, 839073), (75, 279691), (389, 53925), (719, 29175), (1167, 17975), (1945, 10785), (2157, 9725), (3595, 5835)]