81965585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{74177}}^1$

素因数の和:74212

約数の個数: 16

約数和(自身を含む): 112157136

約数和(自身を除く): 30191551

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 74177, 370885, 964301, 1261009, 4821505, 6305045, 16393117, 81965585]

約数ペア:

[(1, 81965585), (5, 16393117), (13, 6305045), (17, 4821505), (65, 1261009), (85, 964301), (221, 370885), (1105, 74177)]