21137481

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1741}}^1$

素因数の和:1837

約数の個数: 24

約数和(自身を含む): 32610240

約数和(自身を除く): 11472759

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 1741, 4047, 5223, 12141, 15669, 33079, 99237, 123611, 297711, 370833, 1112499, 2348609, 7045827, 21137481]

約数ペア:

[(1, 21137481), (3, 7045827), (9, 2348609), (19, 1112499), (57, 370833), (71, 297711), (171, 123611), (213, 99237), (639, 33079), (1349, 15669), (1741, 12141), (4047, 5223)]