19780048

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{8297}}^1$

素因数の和:8454

約数の個数: 20

約数和(自身を含む): 38585700

約数和(自身を除く): 18805652

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 8297, 16594, 33188, 66376, 132752, 1236253, 2472506, 4945012, 9890024, 19780048]

約数ペア:

[(1, 19780048), (2, 9890024), (4, 4945012), (8, 2472506), (16, 1236253), (149, 132752), (298, 66376), (596, 33188), (1192, 16594), (2384, 8297)]