20500215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4729}}^1$

素因数の和:4771

約数の個数: 24

約数和(自身を含む): 34850640

約数和(自身を除く): 14350425

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4729, 14187, 23645, 70935, 80393, 241179, 401965, 1205895, 1366681, 4100043, 6833405, 20500215]

約数ペア:

[(1, 20500215), (3, 6833405), (5, 4100043), (15, 1366681), (17, 1205895), (51, 401965), (85, 241179), (255, 80393), (289, 70935), (867, 23645), (1445, 14187), (4335, 4729)]