21359540

素因数分解:

$2^2\times 5^1\times {\mathrm{601}}^1\times {\mathrm{1777}}^1$

素因数の和:2387

約数の個数: 24

約数和(自身を含む): 44954952

約数和(自身を除く): 23595412

約数列:

[1, 2, 4, 5, 10, 20, 601, 1202, 1777, 2404, 3005, 3554, 6010, 7108, 8885, 12020, 17770, 35540, 1067977, 2135954, 4271908, 5339885, 10679770, 21359540]

約数ペア:

[(1, 21359540), (2, 10679770), (4, 5339885), (5, 4271908), (10, 2135954), (20, 1067977), (601, 35540), (1202, 17770), (1777, 12020), (2404, 8885), (3005, 7108), (3554, 6010)]