20857839

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2671}}^1$

素因数の和:2830

約数の個数: 16

約数和(自身を含む): 29498880

約数和(自身を除く): 8641041

約数列:

[1, 3, 19, 57, 137, 411, 2603, 2671, 7809, 8013, 50749, 152247, 365927, 1097781, 6952613, 20857839]

約数ペア:

[(1, 20857839), (3, 6952613), (19, 1097781), (57, 365927), (137, 152247), (411, 50749), (2603, 8013), (2671, 7809)]