21903429

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 10942395

約数列:

[1, 3, 17, 23, 51, 69, 71, 213, 263, 391, 789, 1173, 1207, 1633, 3621, 4471, 4899, 6049, 13413, 18147, 18673, 27761, 56019, 83283, 102833, 308499, 317441, 429479, 952323, 1288437, 7301143, 21903429]

約数ペア:

[(1, 21903429), (3, 7301143), (17, 1288437), (23, 952323), (51, 429479), (69, 317441), (71, 308499), (213, 102833), (263, 83283), (391, 56019), (789, 27761), (1173, 18673), (1207, 18147), (1633, 13413), (3621, 6049), (4471, 4899)]