21067340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5189}}^1$

素因数の和:5234

約数の個数: 48

約数和(自身を含む): 52315200

約数和(自身を除く): 31247860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5189, 10378, 20756, 25945, 36323, 51890, 72646, 103780, 145292, 150481, 181615, 300962, 363230, 601924, 726460, 752405, 1053367, 1504810, 2106734, 3009620, 4213468, 5266835, 10533670, 21067340]

約数ペア:

[(1, 21067340), (2, 10533670), (4, 5266835), (5, 4213468), (7, 3009620), (10, 2106734), (14, 1504810), (20, 1053367), (28, 752405), (29, 726460), (35, 601924), (58, 363230), (70, 300962), (116, 181615), (140, 150481), (145, 145292), (203, 103780), (290, 72646), (406, 51890), (580, 36323), (812, 25945), (1015, 20756), (2030, 10378), (4060, 5189)]