19845920

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1747}}^1$

素因数の和:1833

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 27727648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1747, 2272, 2840, 3494, 5680, 6988, 8735, 11360, 13976, 17470, 27952, 34940, 55904, 69880, 124037, 139760, 248074, 279520, 496148, 620185, 992296, 1240370, 1984592, 2480740, 3969184, 4961480, 9922960, 19845920]

約数ペア:

[(1, 19845920), (2, 9922960), (4, 4961480), (5, 3969184), (8, 2480740), (10, 1984592), (16, 1240370), (20, 992296), (32, 620185), (40, 496148), (71, 279520), (80, 248074), (142, 139760), (160, 124037), (284, 69880), (355, 55904), (568, 34940), (710, 27952), (1136, 17470), (1420, 13976), (1747, 11360), (2272, 8735), (2840, 6988), (3494, 5680)]