19907180

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1787}}^1$

素因数の和:2353

約数の個数: 24

約数和(自身を含む): 41903568

約数和(自身を除く): 21996388

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1787, 2228, 2785, 3574, 5570, 7148, 8935, 11140, 17870, 35740, 995359, 1990718, 3981436, 4976795, 9953590, 19907180]

約数ペア:

[(1, 19907180), (2, 9953590), (4, 4976795), (5, 3981436), (10, 1990718), (20, 995359), (557, 35740), (1114, 17870), (1787, 11140), (2228, 8935), (2785, 7148), (3574, 5570)]