25648600

素因数分解:

$2^3\times 5^2\times {\mathrm{257}}^1\times {\mathrm{499}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 59985000

約数和(自身を除く): 34336400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 257, 499, 514, 998, 1028, 1285, 1996, 2056, 2495, 2570, 3992, 4990, 5140, 6425, 9980, 10280, 12475, 12850, 19960, 24950, 25700, 49900, 51400, 99800, 128243, 256486, 512972, 641215, 1025944, 1282430, 2564860, 3206075, 5129720, 6412150, 12824300, 25648600]

約数ペア:

[(1, 25648600), (2, 12824300), (4, 6412150), (5, 5129720), (8, 3206075), (10, 2564860), (20, 1282430), (25, 1025944), (40, 641215), (50, 512972), (100, 256486), (200, 128243), (257, 99800), (499, 51400), (514, 49900), (998, 25700), (1028, 24950), (1285, 19960), (1996, 12850), (2056, 12475), (2495, 10280), (2570, 9980), (3992, 6425), (4990, 5140)]