20909600

素因数分解:

$2^5\times 5^2\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:522

約数の個数: 72

約数和(自身を含む): 52027920

約数和(自身を除く): 31118320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 59, 80, 100, 118, 160, 200, 236, 295, 400, 443, 472, 590, 800, 886, 944, 1180, 1475, 1772, 1888, 2215, 2360, 2950, 3544, 4430, 4720, 5900, 7088, 8860, 9440, 11075, 11800, 14176, 17720, 22150, 23600, 26137, 35440, 44300, 47200, 52274, 70880, 88600, 104548, 130685, 177200, 209096, 261370, 354400, 418192, 522740, 653425, 836384, 1045480, 1306850, 2090960, 2613700, 4181920, 5227400, 10454800, 20909600]

約数ペア:

[(1, 20909600), (2, 10454800), (4, 5227400), (5, 4181920), (8, 2613700), (10, 2090960), (16, 1306850), (20, 1045480), (25, 836384), (32, 653425), (40, 522740), (50, 418192), (59, 354400), (80, 261370), (100, 209096), (118, 177200), (160, 130685), (200, 104548), (236, 88600), (295, 70880), (400, 52274), (443, 47200), (472, 44300), (590, 35440), (800, 26137), (886, 23600), (944, 22150), (1180, 17720), (1475, 14176), (1772, 11800), (1888, 11075), (2215, 9440), (2360, 8860), (2950, 7088), (3544, 5900), (4430, 4720)]