81318573

素因数分解:

$3^4\times 7^1\times {\mathrm{143419}}^1$

素因数の和:143438

約数の個数: 20

約数和(自身を含む): 138830560

約数和(自身を除く): 57511987

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 143419, 430257, 1003933, 1290771, 3011799, 3872313, 9035397, 11616939, 27106191, 81318573]

約数ペア:

[(1, 81318573), (3, 27106191), (7, 11616939), (9, 9035397), (21, 3872313), (27, 3011799), (63, 1290771), (81, 1003933), (189, 430257), (567, 143419)]