72195705

素因数分解:

$3^4\times 5^1\times {\mathrm{178261}}^1$

素因数の和:178278

約数の個数: 20

約数和(自身を含む): 129418212

約数和(自身を除く): 57222507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 178261, 534783, 891305, 1604349, 2673915, 4813047, 8021745, 14439141, 24065235, 72195705]

約数ペア:

[(1, 72195705), (3, 24065235), (5, 14439141), (9, 8021745), (15, 4813047), (27, 2673915), (45, 1604349), (81, 891305), (135, 534783), (405, 178261)]