20013505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{1361}}^1$

素因数の和:1556

約数の個数: 16

約数和(自身を含む): 25594704

約数和(自身を除く): 5581199

約数列:

[1, 5, 17, 85, 173, 865, 1361, 2941, 6805, 14705, 23137, 115685, 235453, 1177265, 4002701, 20013505]

約数ペア:

[(1, 20013505), (5, 4002701), (17, 1177265), (85, 235453), (173, 115685), (865, 23137), (1361, 14705), (2941, 6805)]