21711775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1063}}^1$

素因数の和:1135

約数の個数: 24

約数和(自身を含む): 29025920

約数和(自身を除く): 7314145

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1063, 1075, 4085, 5315, 20197, 20425, 26575, 45709, 100985, 228545, 504925, 868471, 1142725, 4342355, 21711775]

約数ペア:

[(1, 21711775), (5, 4342355), (19, 1142725), (25, 868471), (43, 504925), (95, 228545), (215, 100985), (475, 45709), (817, 26575), (1063, 20425), (1075, 20197), (4085, 5315)]