20581845

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 34922880

約数和(自身を除く): 14341035

約数列:

[1, 3, 5, 15, 19, 57, 95, 257, 281, 285, 771, 843, 1285, 1405, 3855, 4215, 4883, 5339, 14649, 16017, 24415, 26695, 72217, 73245, 80085, 216651, 361085, 1083255, 1372123, 4116369, 6860615, 20581845]

約数ペア:

[(1, 20581845), (3, 6860615), (5, 4116369), (15, 1372123), (19, 1083255), (57, 361085), (95, 216651), (257, 80085), (281, 73245), (285, 72217), (771, 26695), (843, 24415), (1285, 16017), (1405, 14649), (3855, 5339), (4215, 4883)]