81236380

素因数分解:

$2^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{6781}}^1$

素因数の和:7389

約数の個数: 24

約数和(自身を含む): 170906400

約数和(自身を除く): 89670020

約数列:

[1, 2, 4, 5, 10, 20, 599, 1198, 2396, 2995, 5990, 6781, 11980, 13562, 27124, 33905, 67810, 135620, 4061819, 8123638, 16247276, 20309095, 40618190, 81236380]

約数ペア:

[(1, 81236380), (2, 40618190), (4, 20309095), (5, 16247276), (10, 8123638), (20, 4061819), (599, 135620), (1198, 67810), (2396, 33905), (2995, 27124), (5990, 13562), (6781, 11980)]