18974235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1151}}^1$

素因数の和:1323

約数の個数: 32

約数和(自身を含む): 34947072

約数和(自身を除く): 15972837

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1151, 2355, 3297, 3453, 5495, 5755, 8057, 16485, 17265, 24171, 40285, 120855, 180707, 542121, 903535, 1264949, 2710605, 3794847, 6324745, 18974235]

約数ペア:

[(1, 18974235), (3, 6324745), (5, 3794847), (7, 2710605), (15, 1264949), (21, 903535), (35, 542121), (105, 180707), (157, 120855), (471, 40285), (785, 24171), (1099, 17265), (1151, 16485), (2355, 8057), (3297, 5755), (3453, 5495)]