81645005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43313}}^1$

素因数の和:43360

約数の個数: 16

約数和(自身を含む): 109151280

約数和(自身を除く): 27506275

約数列:

[1, 5, 13, 29, 65, 145, 377, 1885, 43313, 216565, 563069, 1256077, 2815345, 6280385, 16329001, 81645005]

約数ペア:

[(1, 81645005), (5, 16329001), (13, 6280385), (29, 2815345), (65, 1256077), (145, 563069), (377, 216565), (1885, 43313)]