18801155

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 23079168

約数和(自身を除く): 4278013

約数列:

[1, 5, 71, 211, 251, 355, 1055, 1255, 14981, 17821, 52961, 74905, 89105, 264805, 3760231, 18801155]

約数ペア:

[(1, 18801155), (5, 3760231), (71, 264805), (211, 89105), (251, 74905), (355, 52961), (1055, 17821), (1255, 14981)]