21085845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2719}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 16515435

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 517, 705, 1551, 2585, 2719, 7755, 8157, 13595, 29909, 40785, 89727, 127793, 149545, 383379, 448635, 638965, 1405723, 1916895, 4217169, 7028615, 21085845]

約数ペア:

[(1, 21085845), (3, 7028615), (5, 4217169), (11, 1916895), (15, 1405723), (33, 638965), (47, 448635), (55, 383379), (141, 149545), (165, 127793), (235, 89727), (517, 40785), (705, 29909), (1551, 13595), (2585, 8157), (2719, 7755)]