81765985

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{15679}}^1$

素因数の和:15840

約数の個数: 16

約数和(自身を含む): 112896000

約数和(自身を除く): 31130015

約数列:

[1, 5, 7, 35, 149, 745, 1043, 5215, 15679, 78395, 109753, 548765, 2336171, 11680855, 16353197, 81765985]

約数ペア:

[(1, 81765985), (5, 16353197), (7, 11680855), (35, 2336171), (149, 548765), (745, 109753), (1043, 78395), (5215, 15679)]