20301800

素因数分解:

$2^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{1223}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 47809440

約数和(自身を除く): 27507640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 83, 100, 166, 200, 332, 415, 664, 830, 1223, 1660, 2075, 2446, 3320, 4150, 4892, 6115, 8300, 9784, 12230, 16600, 24460, 30575, 48920, 61150, 101509, 122300, 203018, 244600, 406036, 507545, 812072, 1015090, 2030180, 2537725, 4060360, 5075450, 10150900, 20301800]

約数ペア:

[(1, 20301800), (2, 10150900), (4, 5075450), (5, 4060360), (8, 2537725), (10, 2030180), (20, 1015090), (25, 812072), (40, 507545), (50, 406036), (83, 244600), (100, 203018), (166, 122300), (200, 101509), (332, 61150), (415, 48920), (664, 30575), (830, 24460), (1223, 16600), (1660, 12230), (2075, 9784), (2446, 8300), (3320, 6115), (4150, 4892)]