21401800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{15287}}^1$

素因数の和:15310

約数の個数: 48

約数和(自身を含む): 56871360

約数和(自身を除く): 35469560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400, 15287, 30574, 61148, 76435, 107009, 122296, 152870, 214018, 305740, 382175, 428036, 535045, 611480, 764350, 856072, 1070090, 1528700, 2140180, 2675225, 3057400, 4280360, 5350450, 10700900, 21401800]

約数ペア:

[(1, 21401800), (2, 10700900), (4, 5350450), (5, 4280360), (7, 3057400), (8, 2675225), (10, 2140180), (14, 1528700), (20, 1070090), (25, 856072), (28, 764350), (35, 611480), (40, 535045), (50, 428036), (56, 382175), (70, 305740), (100, 214018), (140, 152870), (175, 122296), (200, 107009), (280, 76435), (350, 61148), (700, 30574), (1400, 15287)]