21055257

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1193}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 31851144

約数和(自身を除く): 10795887

約数列:

[1, 3, 9, 37, 53, 111, 159, 333, 477, 1193, 1961, 3579, 5883, 10737, 17649, 44141, 63229, 132423, 189687, 397269, 569061, 2339473, 7018419, 21055257]

約数ペア:

[(1, 21055257), (3, 7018419), (9, 2339473), (37, 569061), (53, 397269), (111, 189687), (159, 132423), (333, 63229), (477, 44141), (1193, 17649), (1961, 10737), (3579, 5883)]