20021715

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21187}}^1$

素因数の和:21208

約数の個数: 32

約数和(自身を含む): 40680960

約数和(自身を除く): 20659245

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21187, 63561, 105935, 148309, 190683, 317805, 444927, 572049, 741545, 953415, 1334781, 2224635, 2860245, 4004343, 6673905, 20021715]

約数ペア:

[(1, 20021715), (3, 6673905), (5, 4004343), (7, 2860245), (9, 2224635), (15, 1334781), (21, 953415), (27, 741545), (35, 572049), (45, 444927), (63, 317805), (105, 190683), (135, 148309), (189, 105935), (315, 63561), (945, 21187)]