25005080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 58665600

約数和(自身を除く): 33660520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 79, 82, 158, 164, 193, 205, 316, 328, 386, 395, 410, 632, 772, 790, 820, 965, 1544, 1580, 1640, 1930, 3160, 3239, 3860, 6478, 7720, 7913, 12956, 15247, 15826, 16195, 25912, 30494, 31652, 32390, 39565, 60988, 63304, 64780, 76235, 79130, 121976, 129560, 152470, 158260, 304940, 316520, 609880, 625127, 1250254, 2500508, 3125635, 5001016, 6251270, 12502540, 25005080]

約数ペア:

[(1, 25005080), (2, 12502540), (4, 6251270), (5, 5001016), (8, 3125635), (10, 2500508), (20, 1250254), (40, 625127), (41, 609880), (79, 316520), (82, 304940), (158, 158260), (164, 152470), (193, 129560), (205, 121976), (316, 79130), (328, 76235), (386, 64780), (395, 63304), (410, 60988), (632, 39565), (772, 32390), (790, 31652), (820, 30494), (965, 25912), (1544, 16195), (1580, 15826), (1640, 15247), (1930, 12956), (3160, 7913), (3239, 7720), (3860, 6478)]