20890254

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:565

約数の個数: 64

約数和(自身を含む): 52715520

約数和(自身を除く): 31825266

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 103, 154, 206, 231, 309, 439, 462, 618, 721, 878, 1133, 1317, 1442, 2163, 2266, 2634, 3073, 3399, 4326, 4829, 6146, 6798, 7931, 9219, 9658, 14487, 15862, 18438, 23793, 28974, 33803, 45217, 47586, 67606, 90434, 101409, 135651, 202818, 271302, 316519, 497387, 633038, 949557, 994774, 1492161, 1899114, 2984322, 3481709, 6963418, 10445127, 20890254]

約数ペア:

[(1, 20890254), (2, 10445127), (3, 6963418), (6, 3481709), (7, 2984322), (11, 1899114), (14, 1492161), (21, 994774), (22, 949557), (33, 633038), (42, 497387), (66, 316519), (77, 271302), (103, 202818), (154, 135651), (206, 101409), (231, 90434), (309, 67606), (439, 47586), (462, 45217), (618, 33803), (721, 28974), (878, 23793), (1133, 18438), (1317, 15862), (1442, 14487), (2163, 9658), (2266, 9219), (2634, 7931), (3073, 6798), (3399, 6146), (4326, 4829)]