21036591

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13669}}^1$

素因数の和:13700

約数の個数: 20

約数和(自身を含む): 33081400

約数和(自身を除く): 12044809

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13669, 41007, 123021, 259711, 369063, 779133, 1107189, 2337399, 7012197, 21036591]

約数ペア:

[(1, 21036591), (3, 7012197), (9, 2337399), (19, 1107189), (27, 779133), (57, 369063), (81, 259711), (171, 123021), (513, 41007), (1539, 13669)]