20017620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15887}}^1$

素因数の和:15909

約数の個数: 72

約数和(自身を含む): 69398784

約数和(自身を除く): 49381164

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15887, 31774, 47661, 63548, 79435, 95322, 111209, 142983, 158870, 190644, 222418, 238305, 285966, 317740, 333627, 444836, 476610, 556045, 571932, 667254, 714915, 953220, 1000881, 1112090, 1334508, 1429830, 1668135, 2001762, 2224180, 2859660, 3336270, 4003524, 5004405, 6672540, 10008810, 20017620]

約数ペア:

[(1, 20017620), (2, 10008810), (3, 6672540), (4, 5004405), (5, 4003524), (6, 3336270), (7, 2859660), (9, 2224180), (10, 2001762), (12, 1668135), (14, 1429830), (15, 1334508), (18, 1112090), (20, 1000881), (21, 953220), (28, 714915), (30, 667254), (35, 571932), (36, 556045), (42, 476610), (45, 444836), (60, 333627), (63, 317740), (70, 285966), (84, 238305), (90, 222418), (105, 190644), (126, 158870), (140, 142983), (180, 111209), (210, 95322), (252, 79435), (315, 63548), (420, 47661), (630, 31774), (1260, 15887)]