20187800

素因数分解:

$2^3\times 5^2\times {\mathrm{193}}^1\times {\mathrm{523}}^1$

素因数の和:732

約数の個数: 48

約数和(自身を含む): 47270040

約数和(自身を除く): 27082240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 193, 200, 386, 523, 772, 965, 1046, 1544, 1930, 2092, 2615, 3860, 4184, 4825, 5230, 7720, 9650, 10460, 13075, 19300, 20920, 26150, 38600, 52300, 100939, 104600, 201878, 403756, 504695, 807512, 1009390, 2018780, 2523475, 4037560, 5046950, 10093900, 20187800]

約数ペア:

[(1, 20187800), (2, 10093900), (4, 5046950), (5, 4037560), (8, 2523475), (10, 2018780), (20, 1009390), (25, 807512), (40, 504695), (50, 403756), (100, 201878), (193, 104600), (200, 100939), (386, 52300), (523, 38600), (772, 26150), (965, 20920), (1046, 19300), (1544, 13075), (1930, 10460), (2092, 9650), (2615, 7720), (3860, 5230), (4184, 4825)]