19991024

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{11677}}^1$

素因数の和:11792

約数の個数: 20

約数和(自身を含む): 39097944

約数和(自身を除く): 19106920

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 11677, 23354, 46708, 93416, 186832, 1249439, 2498878, 4997756, 9995512, 19991024]

約数ペア:

[(1, 19991024), (2, 9995512), (4, 4997756), (8, 2498878), (16, 1249439), (107, 186832), (214, 93416), (428, 46708), (856, 23354), (1712, 11677)]