21884775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 18612633

約数列:

[1, 3, 5, 11, 15, 25, 33, 41, 55, 75, 123, 165, 205, 275, 451, 615, 647, 825, 1025, 1353, 1941, 2255, 3075, 3235, 6765, 7117, 9705, 11275, 16175, 21351, 26527, 33825, 35585, 48525, 79581, 106755, 132635, 177925, 291797, 397905, 533775, 663175, 875391, 1458985, 1989525, 4376955, 7294925, 21884775]

約数ペア:

[(1, 21884775), (3, 7294925), (5, 4376955), (11, 1989525), (15, 1458985), (25, 875391), (33, 663175), (41, 533775), (55, 397905), (75, 291797), (123, 177925), (165, 132635), (205, 106755), (275, 79581), (451, 48525), (615, 35585), (647, 33825), (825, 26527), (1025, 21351), (1353, 16175), (1941, 11275), (2255, 9705), (3075, 7117), (3235, 6765)]