19686440

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2207}}^1$

素因数の和:2441

約数の個数: 32

約数和(自身を含む): 44513280

約数和(自身を除く): 24826840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2207, 2230, 4414, 4460, 8828, 8920, 11035, 17656, 22070, 44140, 88280, 492161, 984322, 1968644, 2460805, 3937288, 4921610, 9843220, 19686440]

約数ペア:

[(1, 19686440), (2, 9843220), (4, 4921610), (5, 3937288), (8, 2460805), (10, 1968644), (20, 984322), (40, 492161), (223, 88280), (446, 44140), (892, 22070), (1115, 17656), (1784, 11035), (2207, 8920), (2230, 8828), (4414, 4460)]