81757580

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{17851}}^1$

素因数の和:18089

約数の個数: 24

約数和(自身を含む): 172450320

約数和(自身を除く): 90692740

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 17851, 35702, 71404, 89255, 178510, 357020, 4087879, 8175758, 16351516, 20439395, 40878790, 81757580]

約数ペア:

[(1, 81757580), (2, 40878790), (4, 20439395), (5, 16351516), (10, 8175758), (20, 4087879), (229, 357020), (458, 178510), (916, 89255), (1145, 71404), (2290, 35702), (4580, 17851)]