20866455

素因数分解:

$3^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{911}}^1$

素因数の和:1431

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 15412905

約数列:

[1, 3, 5, 9, 15, 45, 509, 911, 1527, 2545, 2733, 4555, 4581, 7635, 8199, 13665, 22905, 40995, 463699, 1391097, 2318495, 4173291, 6955485, 20866455]

約数ペア:

[(1, 20866455), (3, 6955485), (5, 4173291), (9, 2318495), (15, 1391097), (45, 463699), (509, 40995), (911, 22905), (1527, 13665), (2545, 8199), (2733, 7635), (4555, 4581)]