20694808

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6451}}^1$

素因数の和:6858

約数の個数: 16

約数和(自身を含む): 38905560

約数和(自身を除く): 18210752

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6451, 12902, 25804, 51608, 2586851, 5173702, 10347404, 20694808]

約数ペア:

[(1, 20694808), (2, 10347404), (4, 5173702), (8, 2586851), (401, 51608), (802, 25804), (1604, 12902), (3208, 6451)]