21660777

素因数分解:

$3^6\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:752

約数の個数: 28

約数和(自身を含む): 33279664

約数和(自身を除く): 11618887

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 691, 729, 1161, 2073, 3483, 6219, 10449, 18657, 29713, 31347, 55971, 89139, 167913, 267417, 503739, 802251, 2406753, 7220259, 21660777]

約数ペア:

[(1, 21660777), (3, 7220259), (9, 2406753), (27, 802251), (43, 503739), (81, 267417), (129, 167913), (243, 89139), (387, 55971), (691, 31347), (729, 29713), (1161, 18657), (2073, 10449), (3483, 6219)]