21879825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2411}}^1$

素因数の和:2446

約数の個数: 36

約数和(自身を含む): 39778704

約数和(自身を除く): 17898879

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2411, 3025, 7233, 9075, 12055, 26521, 36165, 60275, 79563, 132605, 180825, 291731, 397815, 663025, 875193, 1458655, 1989075, 4375965, 7293275, 21879825]

約数ペア:

[(1, 21879825), (3, 7293275), (5, 4375965), (11, 1989075), (15, 1458655), (25, 875193), (33, 663025), (55, 397815), (75, 291731), (121, 180825), (165, 132605), (275, 79563), (363, 60275), (605, 36165), (825, 26521), (1815, 12055), (2411, 9075), (3025, 7233)]