19989616

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2243}}^1$

素因数の和:2808

約数の個数: 20

約数和(自身を含む): 38816712

約数和(自身を除く): 18827096

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2228, 2243, 4456, 4486, 8912, 8972, 17944, 35888, 1249351, 2498702, 4997404, 9994808, 19989616]

約数ペア:

[(1, 19989616), (2, 9994808), (4, 4997404), (8, 2498702), (16, 1249351), (557, 35888), (1114, 17944), (2228, 8972), (2243, 8912), (4456, 4486)]