20872935

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16866585

約数列:

[1, 3, 5, 9, 15, 45, 47, 71, 139, 141, 213, 235, 355, 417, 423, 639, 695, 705, 1065, 1251, 2085, 2115, 3195, 3337, 6255, 6533, 9869, 10011, 16685, 19599, 29607, 30033, 32665, 49345, 50055, 58797, 88821, 97995, 148035, 150165, 293985, 444105, 463843, 1391529, 2319215, 4174587, 6957645, 20872935]

約数ペア:

[(1, 20872935), (3, 6957645), (5, 4174587), (9, 2319215), (15, 1391529), (45, 463843), (47, 444105), (71, 293985), (139, 150165), (141, 148035), (213, 97995), (235, 88821), (355, 58797), (417, 50055), (423, 49345), (639, 32665), (695, 30033), (705, 29607), (1065, 19599), (1251, 16685), (2085, 10011), (2115, 9869), (3195, 6533), (3337, 6255)]