81722205

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{16661}}^1$

素因数の和:16781

約数の個数: 24

約数和(自身を含む): 142959960

約数和(自身を除く): 61237755

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4905, 16661, 49983, 83305, 149949, 249915, 749745, 1816049, 5448147, 9080245, 16344441, 27240735, 81722205]

約数ペア:

[(1, 81722205), (3, 27240735), (5, 16344441), (9, 9080245), (15, 5448147), (45, 1816049), (109, 749745), (327, 249915), (545, 149949), (981, 83305), (1635, 49983), (4905, 16661)]