18727455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^2$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 31844016

約数和(自身を除く): 13116561

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 271, 813, 1355, 4065, 4607, 13821, 23035, 69105, 73441, 220323, 367205, 1101615, 1248497, 3745491, 6242485, 18727455]

約数ペア:

[(1, 18727455), (3, 6242485), (5, 3745491), (15, 1248497), (17, 1101615), (51, 367205), (85, 220323), (255, 73441), (271, 69105), (813, 23035), (1355, 13821), (4065, 4607)]