7180245

素因数分解:

$3^4\times 5^1\times {\mathrm{17729}}^1$

素因数の和:17746

約数の個数: 20

約数和(自身を含む): 12871980

約数和(自身を除く): 5691735

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 17729, 53187, 88645, 159561, 265935, 478683, 797805, 1436049, 2393415, 7180245]

約数ペア:

[(1, 7180245), (3, 2393415), (5, 1436049), (9, 797805), (15, 478683), (27, 265935), (45, 159561), (81, 88645), (135, 53187), (405, 17729)]