21538755

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{677}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 43153344

約数和(自身を除く): 21614589

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 101, 105, 303, 315, 505, 677, 707, 909, 1515, 2031, 2121, 3385, 3535, 4545, 4739, 6093, 6363, 10155, 10605, 14217, 23695, 30465, 31815, 42651, 68377, 71085, 205131, 213255, 341885, 478639, 615393, 1025655, 1435917, 2393195, 3076965, 4307751, 7179585, 21538755]

約数ペア:

[(1, 21538755), (3, 7179585), (5, 4307751), (7, 3076965), (9, 2393195), (15, 1435917), (21, 1025655), (35, 615393), (45, 478639), (63, 341885), (101, 213255), (105, 205131), (303, 71085), (315, 68377), (505, 42651), (677, 31815), (707, 30465), (909, 23695), (1515, 14217), (2031, 10605), (2121, 10155), (3385, 6363), (3535, 6093), (4545, 4739)]