19989712

素因数分解:

$2^4\times {\mathrm{647}}^1\times {\mathrm{1931}}^1$

素因数の和:2586

約数の個数: 20

約数和(自身を含む): 38810016

約数和(自身を除く): 18820304

約数列:

[1, 2, 4, 8, 16, 647, 1294, 1931, 2588, 3862, 5176, 7724, 10352, 15448, 30896, 1249357, 2498714, 4997428, 9994856, 19989712]

約数ペア:

[(1, 19989712), (2, 9994856), (4, 4997428), (8, 2498714), (16, 1249357), (647, 30896), (1294, 15448), (1931, 10352), (2588, 7724), (3862, 5176)]