1638962840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{677}}^1\times {\mathrm{2087}}^1$

素因数の和:2804

約数の個数: 64

約数和(自身を含む): 3822292800

約数和(自身を除く): 2183329960

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 677, 1160, 1354, 2087, 2708, 3385, 4174, 5416, 6770, 8348, 10435, 13540, 16696, 19633, 20870, 27080, 39266, 41740, 60523, 78532, 83480, 98165, 121046, 157064, 196330, 242092, 302615, 392660, 484184, 605230, 785320, 1210460, 1412899, 2420920, 2825798, 5651596, 7064495, 11303192, 14128990, 28257980, 40974071, 56515960, 81948142, 163896284, 204870355, 327792568, 409740710, 819481420, 1638962840]

約数ペア:

[(1, 1638962840), (2, 819481420), (4, 409740710), (5, 327792568), (8, 204870355), (10, 163896284), (20, 81948142), (29, 56515960), (40, 40974071), (58, 28257980), (116, 14128990), (145, 11303192), (232, 7064495), (290, 5651596), (580, 2825798), (677, 2420920), (1160, 1412899), (1354, 1210460), (2087, 785320), (2708, 605230), (3385, 484184), (4174, 392660), (5416, 302615), (6770, 242092), (8348, 196330), (10435, 157064), (13540, 121046), (16696, 98165), (19633, 83480), (20870, 78532), (27080, 60523), (39266, 41740)]