217792395

素因数分解:

$3^9\times 5^1\times {\mathrm{2213}}^1$

素因数の和:2245

約数の個数: 40

約数和(自身を含む): 392196816

約数和(自身を除く): 174404421

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 2187, 2213, 3645, 6561, 6639, 10935, 11065, 19683, 19917, 32805, 33195, 59751, 98415, 99585, 179253, 298755, 537759, 896265, 1613277, 2688795, 4839831, 8066385, 14519493, 24199155, 43558479, 72597465, 217792395]

約数ペア:

[(1, 217792395), (3, 72597465), (5, 43558479), (9, 24199155), (15, 14519493), (27, 8066385), (45, 4839831), (81, 2688795), (135, 1613277), (243, 896265), (405, 537759), (729, 298755), (1215, 179253), (2187, 99585), (2213, 98415), (3645, 59751), (6561, 33195), (6639, 32805), (10935, 19917), (11065, 19683)]