20012820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1187}}^1$

素因数の和:1480

約数の個数: 48

約数和(自身を含む): 56282688

約数和(自身を除く): 36269868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 281, 562, 843, 1124, 1187, 1405, 1686, 2374, 2810, 3372, 3561, 4215, 4748, 5620, 5935, 7122, 8430, 11870, 14244, 16860, 17805, 23740, 35610, 71220, 333547, 667094, 1000641, 1334188, 1667735, 2001282, 3335470, 4002564, 5003205, 6670940, 10006410, 20012820]

約数ペア:

[(1, 20012820), (2, 10006410), (3, 6670940), (4, 5003205), (5, 4002564), (6, 3335470), (10, 2001282), (12, 1667735), (15, 1334188), (20, 1000641), (30, 667094), (60, 333547), (281, 71220), (562, 35610), (843, 23740), (1124, 17805), (1187, 16860), (1405, 14244), (1686, 11870), (2374, 8430), (2810, 7122), (3372, 5935), (3561, 5620), (4215, 4748)]