20813220

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{38543}}^1$

素因数の和:38561

約数の個数: 48

約数和(自身を含む): 64753920

約数和(自身を除く): 43940700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 38543, 77086, 115629, 154172, 192715, 231258, 346887, 385430, 462516, 578145, 693774, 770860, 1040661, 1156290, 1387548, 1734435, 2081322, 2312580, 3468870, 4162644, 5203305, 6937740, 10406610, 20813220]

約数ペア:

[(1, 20813220), (2, 10406610), (3, 6937740), (4, 5203305), (5, 4162644), (6, 3468870), (9, 2312580), (10, 2081322), (12, 1734435), (15, 1387548), (18, 1156290), (20, 1040661), (27, 770860), (30, 693774), (36, 578145), (45, 462516), (54, 385430), (60, 346887), (90, 231258), (108, 192715), (135, 154172), (180, 115629), (270, 77086), (540, 38543)]