87149690

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{541}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 159803280

約数和(自身を除く): 72653590

約数列:

[1, 2, 5, 10, 89, 178, 181, 362, 445, 541, 890, 905, 1082, 1810, 2705, 5410, 16109, 32218, 48149, 80545, 96298, 97921, 161090, 195842, 240745, 481490, 489605, 979210, 8714969, 17429938, 43574845, 87149690]

約数ペア:

[(1, 87149690), (2, 43574845), (5, 17429938), (10, 8714969), (89, 979210), (178, 489605), (181, 481490), (362, 240745), (445, 195842), (541, 161090), (890, 97921), (905, 96298), (1082, 80545), (1810, 48149), (2705, 32218), (5410, 16109)]