81233325

素因数分解:

$3^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{1619}}^1$

素因数の和:1858

約数の個数: 36

約数和(自身を含む): 146240640

約数和(自身を除く): 65007315

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 223, 225, 669, 1115, 1619, 2007, 3345, 4857, 5575, 8095, 10035, 14571, 16725, 24285, 40475, 50175, 72855, 121425, 361037, 364275, 1083111, 1805185, 3249333, 5415555, 9025925, 16246665, 27077775, 81233325]

約数ペア:

[(1, 81233325), (3, 27077775), (5, 16246665), (9, 9025925), (15, 5415555), (25, 3249333), (45, 1805185), (75, 1083111), (223, 364275), (225, 361037), (669, 121425), (1115, 72855), (1619, 50175), (2007, 40475), (3345, 24285), (4857, 16725), (5575, 14571), (8095, 10035)]