18123420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43151}}^1$

素因数の和:43170

約数の個数: 48

約数和(自身を含む): 57996288

約数和(自身を除く): 39872868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43151, 86302, 129453, 172604, 215755, 258906, 302057, 431510, 517812, 604114, 647265, 863020, 906171, 1208228, 1294530, 1510285, 1812342, 2589060, 3020570, 3624684, 4530855, 6041140, 9061710, 18123420]

約数ペア:

[(1, 18123420), (2, 9061710), (3, 6041140), (4, 4530855), (5, 3624684), (6, 3020570), (7, 2589060), (10, 1812342), (12, 1510285), (14, 1294530), (15, 1208228), (20, 906171), (21, 863020), (28, 647265), (30, 604114), (35, 517812), (42, 431510), (60, 302057), (70, 258906), (84, 215755), (105, 172604), (140, 129453), (210, 86302), (420, 43151)]