1990681

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:372

約数の個数: 16

約数和(自身を含む): 2515968

約数和(自身を除く): 525287

約数列:

[1, 7, 11, 77, 103, 251, 721, 1133, 1757, 2761, 7931, 19327, 25853, 180971, 284383, 1990681]

約数ペア:

[(1, 1990681), (7, 284383), (11, 180971), (77, 25853), (103, 19327), (251, 7931), (721, 2761), (1133, 1757)]