20121557780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{357653}}^1$

素因数の和:357788

約数の個数: 48

約数和(自身を含む): 44163115920

約数和(自身を除く): 24041558140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 97, 116, 145, 194, 290, 388, 485, 580, 970, 1940, 2813, 5626, 11252, 14065, 28130, 56260, 357653, 715306, 1430612, 1788265, 3576530, 7153060, 10371937, 20743874, 34692341, 41487748, 51859685, 69384682, 103719370, 138769364, 173461705, 207438740, 346923410, 693846820, 1006077889, 2012155778, 4024311556, 5030389445, 10060778890, 20121557780]

約数ペア:

[(1, 20121557780), (2, 10060778890), (4, 5030389445), (5, 4024311556), (10, 2012155778), (20, 1006077889), (29, 693846820), (58, 346923410), (97, 207438740), (116, 173461705), (145, 138769364), (194, 103719370), (290, 69384682), (388, 51859685), (485, 41487748), (580, 34692341), (970, 20743874), (1940, 10371937), (2813, 7153060), (5626, 3576530), (11252, 1788265), (14065, 1430612), (28130, 715306), (56260, 357653)]