209901920

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{30509}}^1$

素因数の和:30567

約数の個数: 48

約数和(自身を含む): 507442320

約数和(自身を除く): 297540400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3440, 6880, 30509, 61018, 122036, 152545, 244072, 305090, 488144, 610180, 976288, 1220360, 1311887, 2440720, 2623774, 4881440, 5247548, 6559435, 10495096, 13118870, 20990192, 26237740, 41980384, 52475480, 104950960, 209901920]

約数ペア:

[(1, 209901920), (2, 104950960), (4, 52475480), (5, 41980384), (8, 26237740), (10, 20990192), (16, 13118870), (20, 10495096), (32, 6559435), (40, 5247548), (43, 4881440), (80, 2623774), (86, 2440720), (160, 1311887), (172, 1220360), (215, 976288), (344, 610180), (430, 488144), (688, 305090), (860, 244072), (1376, 152545), (1720, 122036), (3440, 61018), (6880, 30509)]