2001505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{241}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 2648448

約数和(自身を除く): 646943

約数列:

[1, 5, 11, 55, 151, 241, 755, 1205, 1661, 2651, 8305, 13255, 36391, 181955, 400301, 2001505]

約数ペア:

[(1, 2001505), (5, 400301), (11, 181955), (55, 36391), (151, 13255), (241, 8305), (755, 2651), (1205, 1661)]