20180854

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{317}}^1$

素因数の和:687

約数の個数: 16

約数和(自身を含む): 30718800

約数和(自身を除く): 10537946

約数列:

[1, 2, 139, 229, 278, 317, 458, 634, 31831, 44063, 63662, 72593, 88126, 145186, 10090427, 20180854]

約数ペア:

[(1, 20180854), (2, 10090427), (139, 145186), (229, 88126), (278, 72593), (317, 63662), (458, 44063), (634, 31831)]