21808029

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 10447971

約数列:

[1, 3, 19, 29, 57, 79, 87, 167, 237, 501, 551, 1501, 1653, 2291, 3173, 4503, 4843, 6873, 9519, 13193, 14529, 39579, 43529, 92017, 130587, 250667, 276051, 382597, 752001, 1147791, 7269343, 21808029]

約数ペア:

[(1, 21808029), (3, 7269343), (19, 1147791), (29, 752001), (57, 382597), (79, 276051), (87, 250667), (167, 130587), (237, 92017), (501, 43529), (551, 39579), (1501, 14529), (1653, 13193), (2291, 9519), (3173, 6873), (4503, 4843)]