20866665

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{17609}}^1$

素因数の和:17696

約数の個数: 16

約数和(自身を含む): 33811200

約数和(自身を除く): 12944535

約数列:

[1, 3, 5, 15, 79, 237, 395, 1185, 17609, 52827, 88045, 264135, 1391111, 4173333, 6955555, 20866665]

約数ペア:

[(1, 20866665), (3, 6955555), (5, 4173333), (15, 1391111), (79, 264135), (237, 88045), (395, 52827), (1185, 17609)]