81272545

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{2089}}^1$

素因数の和:2376

約数の個数: 16

約数和(自身を含む): 101122560

約数和(自身を除く): 19850015

約数列:

[1, 5, 31, 155, 251, 1255, 2089, 7781, 10445, 38905, 64759, 323795, 524339, 2621695, 16254509, 81272545]

約数ペア:

[(1, 81272545), (5, 16254509), (31, 2621695), (155, 524339), (251, 323795), (1255, 64759), (2089, 38905), (7781, 10445)]