20790119

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{643}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 3939481

約数列:

[1, 7, 31, 149, 217, 643, 1043, 4501, 4619, 19933, 32333, 95807, 139531, 670649, 2970017, 20790119]

約数ペア:

[(1, 20790119), (7, 2970017), (31, 670649), (149, 139531), (217, 95807), (643, 32333), (1043, 19933), (4501, 4619)]