19701280

素因数分解:

$2^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2087}}^1$

素因数の和:2161

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 27654560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 80, 118, 160, 236, 295, 472, 590, 944, 1180, 1888, 2087, 2360, 4174, 4720, 8348, 9440, 10435, 16696, 20870, 33392, 41740, 66784, 83480, 123133, 166960, 246266, 333920, 492532, 615665, 985064, 1231330, 1970128, 2462660, 3940256, 4925320, 9850640, 19701280]

約数ペア:

[(1, 19701280), (2, 9850640), (4, 4925320), (5, 3940256), (8, 2462660), (10, 1970128), (16, 1231330), (20, 985064), (32, 615665), (40, 492532), (59, 333920), (80, 246266), (118, 166960), (160, 123133), (236, 83480), (295, 66784), (472, 41740), (590, 33392), (944, 20870), (1180, 16696), (1888, 10435), (2087, 9440), (2360, 8348), (4174, 4720)]