21903705

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21163}}^1$

素因数の和:21197

約数の個数: 24

約数和(自身を含む): 39619008

約数和(自身を除く): 17715303

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 21163, 63489, 105815, 190467, 317445, 486749, 952335, 1460247, 2433745, 4380741, 7301235, 21903705]

約数ペア:

[(1, 21903705), (3, 7301235), (5, 4380741), (9, 2433745), (15, 1460247), (23, 952335), (45, 486749), (69, 317445), (115, 190467), (207, 105815), (345, 63489), (1035, 21163)]