81391718

素因数分解:

$2^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1\times {\mathrm{1489}}^1$

素因数の和:1823

約数の個数: 16

約数和(自身を含む): 123658080

約数和(自身を除く): 42266362

約数列:

[1, 2, 151, 181, 302, 362, 1489, 2978, 27331, 54662, 224839, 269509, 449678, 539018, 40695859, 81391718]

約数ペア:

[(1, 81391718), (2, 40695859), (151, 539018), (181, 449678), (302, 269509), (362, 224839), (1489, 54662), (2978, 27331)]