2012123380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{97}}^1\times {\mathrm{617}}^1$

素因数の和:805

約数の個数: 72

約数和(自身を含む): 4382774424

約数和(自身を除く): 2370651044

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 617, 820, 970, 1234, 1681, 1940, 2468, 3085, 3362, 3977, 6170, 6724, 7954, 8405, 12340, 15908, 16810, 19885, 25297, 33620, 39770, 50594, 59849, 79540, 101188, 119698, 126485, 163057, 239396, 252970, 299245, 326114, 505940, 598490, 652228, 815285, 1037177, 1196980, 1630570, 2074354, 2453809, 3261140, 4148708, 4907618, 5185885, 9815236, 10371770, 12269045, 20743540, 24538090, 49076180, 100606169, 201212338, 402424676, 503030845, 1006061690, 2012123380]

約数ペア:

[(1, 2012123380), (2, 1006061690), (4, 503030845), (5, 402424676), (10, 201212338), (20, 100606169), (41, 49076180), (82, 24538090), (97, 20743540), (164, 12269045), (194, 10371770), (205, 9815236), (388, 5185885), (410, 4907618), (485, 4148708), (617, 3261140), (820, 2453809), (970, 2074354), (1234, 1630570), (1681, 1196980), (1940, 1037177), (2468, 815285), (3085, 652228), (3362, 598490), (3977, 505940), (6170, 326114), (6724, 299245), (7954, 252970), (8405, 239396), (12340, 163057), (15908, 126485), (16810, 119698), (19885, 101188), (25297, 79540), (33620, 59849), (39770, 50594)]