20404784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67121}}^1$

素因数の和:67148

約数の個数: 20

約数和(自身を含む): 41615640

約数和(自身を除く): 21210856

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67121, 134242, 268484, 536968, 1073936, 1275299, 2550598, 5101196, 10202392, 20404784]

約数ペア:

[(1, 20404784), (2, 10202392), (4, 5101196), (8, 2550598), (16, 1275299), (19, 1073936), (38, 536968), (76, 268484), (152, 134242), (304, 67121)]