21446991

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12421809

約数列:

[1, 3, 9, 19, 27, 57, 97, 171, 291, 431, 513, 873, 1293, 1843, 2619, 3879, 5529, 8189, 11637, 16587, 24567, 41807, 49761, 73701, 125421, 221103, 376263, 794333, 1128789, 2382999, 7148997, 21446991]

約数ペア:

[(1, 21446991), (3, 7148997), (9, 2382999), (19, 1128789), (27, 794333), (57, 376263), (97, 221103), (171, 125421), (291, 73701), (431, 49761), (513, 41807), (873, 24567), (1293, 16587), (1843, 11637), (2619, 8189), (3879, 5529)]