261300735

素因数分解:

$3^4\times 5^1\times {\mathrm{645187}}^1$

素因数の和:645204

約数の個数: 20

約数和(自身を含む): 468406488

約数和(自身を除く): 207105753

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 645187, 1935561, 3225935, 5806683, 9677805, 17420049, 29033415, 52260147, 87100245, 261300735]

約数ペア:

[(1, 261300735), (3, 87100245), (5, 52260147), (9, 29033415), (15, 17420049), (27, 9677805), (45, 5806683), (81, 3225935), (135, 1935561), (405, 645187)]