21778101

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{461}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 32792760

約数和(自身を除く): 11014659

約数列:

[1, 3, 9, 29, 87, 181, 261, 461, 543, 1383, 1629, 4149, 5249, 13369, 15747, 40107, 47241, 83441, 120321, 250323, 750969, 2419789, 7259367, 21778101]

約数ペア:

[(1, 21778101), (3, 7259367), (9, 2419789), (29, 750969), (87, 250323), (181, 120321), (261, 83441), (461, 47241), (543, 40107), (1383, 15747), (1629, 13369), (4149, 5249)]