20251600

素因数分解:

$2^4\times 5^2\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:472

約数の個数: 60

約数和(自身を含む): 49091724

約数和(自身を除く): 28840124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 197, 200, 257, 394, 400, 514, 788, 985, 1028, 1285, 1576, 1970, 2056, 2570, 3152, 3940, 4112, 4925, 5140, 6425, 7880, 9850, 10280, 12850, 15760, 19700, 20560, 25700, 39400, 50629, 51400, 78800, 101258, 102800, 202516, 253145, 405032, 506290, 810064, 1012580, 1265725, 2025160, 2531450, 4050320, 5062900, 10125800, 20251600]

約数ペア:

[(1, 20251600), (2, 10125800), (4, 5062900), (5, 4050320), (8, 2531450), (10, 2025160), (16, 1265725), (20, 1012580), (25, 810064), (40, 506290), (50, 405032), (80, 253145), (100, 202516), (197, 102800), (200, 101258), (257, 78800), (394, 51400), (400, 50629), (514, 39400), (788, 25700), (985, 20560), (1028, 19700), (1285, 15760), (1576, 12850), (1970, 10280), (2056, 9850), (2570, 7880), (3152, 6425), (3940, 5140), (4112, 4925)]