21400498

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1871}}^1$

素因数の和:1942

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18136142

約数列:

[1, 2, 7, 14, 19, 38, 43, 86, 133, 266, 301, 602, 817, 1634, 1871, 3742, 5719, 11438, 13097, 26194, 35549, 71098, 80453, 160906, 248843, 497686, 563171, 1126342, 1528607, 3057214, 10700249, 21400498]

約数ペア:

[(1, 21400498), (2, 10700249), (7, 3057214), (14, 1528607), (19, 1126342), (38, 563171), (43, 497686), (86, 248843), (133, 160906), (266, 80453), (301, 71098), (602, 35549), (817, 26194), (1634, 13097), (1871, 11438), (3742, 5719)]