19504840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2311}}^1$

素因数の和:2533

約数の個数: 32

約数和(自身を含む): 44112960

約数和(自身を除く): 24608120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2311, 4220, 4622, 8440, 9244, 11555, 18488, 23110, 46220, 92440, 487621, 975242, 1950484, 2438105, 3900968, 4876210, 9752420, 19504840]

約数ペア:

[(1, 19504840), (2, 9752420), (4, 4876210), (5, 3900968), (8, 2438105), (10, 1950484), (20, 975242), (40, 487621), (211, 92440), (422, 46220), (844, 23110), (1055, 18488), (1688, 11555), (2110, 9244), (2311, 8440), (4220, 4622)]