20197917

素因数分解:

$3^5\times {\mathrm{43}}^1\times {\mathrm{1933}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 30974944

約数和(自身を除く): 10777027

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 1161, 1933, 3483, 5799, 10449, 17397, 52191, 83119, 156573, 249357, 469719, 748071, 2244213, 6732639, 20197917]

約数ペア:

[(1, 20197917), (3, 6732639), (9, 2244213), (27, 748071), (43, 469719), (81, 249357), (129, 156573), (243, 83119), (387, 52191), (1161, 17397), (1933, 10449), (3483, 5799)]