20858751

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{547}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 31915520

約数和(自身を除く): 11056769

約数列:

[1, 3, 9, 19, 57, 171, 223, 547, 669, 1641, 2007, 4237, 4923, 10393, 12711, 31179, 38133, 93537, 121981, 365943, 1097829, 2317639, 6952917, 20858751]

約数ペア:

[(1, 20858751), (3, 6952917), (9, 2317639), (19, 1097829), (57, 365943), (171, 121981), (223, 93537), (547, 38133), (669, 31179), (1641, 12711), (2007, 10393), (4237, 4923)]