20863600

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1213}}^1$

素因数の和:1274

約数の個数: 60

約数和(自身を含む): 51332776

約数和(自身を除く): 30469176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 1075, 1213, 1720, 2150, 2426, 3440, 4300, 4852, 6065, 8600, 9704, 12130, 17200, 19408, 24260, 30325, 48520, 52159, 60650, 97040, 104318, 121300, 208636, 242600, 260795, 417272, 485200, 521590, 834544, 1043180, 1303975, 2086360, 2607950, 4172720, 5215900, 10431800, 20863600]

約数ペア:

[(1, 20863600), (2, 10431800), (4, 5215900), (5, 4172720), (8, 2607950), (10, 2086360), (16, 1303975), (20, 1043180), (25, 834544), (40, 521590), (43, 485200), (50, 417272), (80, 260795), (86, 242600), (100, 208636), (172, 121300), (200, 104318), (215, 97040), (344, 60650), (400, 52159), (430, 48520), (688, 30325), (860, 24260), (1075, 19408), (1213, 17200), (1720, 12130), (2150, 9704), (2426, 8600), (3440, 6065), (4300, 4852)]