638763736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{5479}}^1$

素因数の和:5576

約数の個数: 64

約数和(自身を含む): 1380960000

約数和(自身を除く): 742196264

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 59, 76, 104, 118, 152, 236, 247, 472, 494, 767, 988, 1121, 1534, 1976, 2242, 3068, 4484, 5479, 6136, 8968, 10958, 14573, 21916, 29146, 43832, 58292, 71227, 104101, 116584, 142454, 208202, 284908, 323261, 416404, 569816, 646522, 832808, 1293044, 1353313, 2586088, 2706626, 4202393, 5413252, 6141959, 8404786, 10826504, 12283918, 16809572, 24567836, 33619144, 49135672, 79845467, 159690934, 319381868, 638763736]

約数ペア:

[(1, 638763736), (2, 319381868), (4, 159690934), (8, 79845467), (13, 49135672), (19, 33619144), (26, 24567836), (38, 16809572), (52, 12283918), (59, 10826504), (76, 8404786), (104, 6141959), (118, 5413252), (152, 4202393), (236, 2706626), (247, 2586088), (472, 1353313), (494, 1293044), (767, 832808), (988, 646522), (1121, 569816), (1534, 416404), (1976, 323261), (2242, 284908), (3068, 208202), (4484, 142454), (5479, 116584), (6136, 104101), (8968, 71227), (10958, 58292), (14573, 43832), (21916, 29146)]