21897495

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21157}}^1$

素因数の和:21191

約数の個数: 24

約数和(自身を含む): 39607776

約数和(自身を除く): 17710281

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 21157, 63471, 105785, 190413, 317355, 486611, 952065, 1459833, 2433055, 4379499, 7299165, 21897495]

約数ペア:

[(1, 21897495), (3, 7299165), (5, 4379499), (9, 2433055), (15, 1459833), (23, 952065), (45, 486611), (69, 317355), (115, 190413), (207, 105785), (345, 63471), (1035, 21157)]