12909213

素因数分解:

$3^4\times {\mathrm{197}}^1\times {\mathrm{809}}^1$

素因数の和:1018

約数の個数: 20

約数和(自身を含む): 19405980

約数和(自身を除く): 6496767

約数列:

[1, 3, 9, 27, 81, 197, 591, 809, 1773, 2427, 5319, 7281, 15957, 21843, 65529, 159373, 478119, 1434357, 4303071, 12909213]

約数ペア:

[(1, 12909213), (3, 4303071), (9, 1434357), (27, 478119), (81, 159373), (197, 65529), (591, 21843), (809, 15957), (1773, 7281), (2427, 5319)]