19086940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10723}}^1$

素因数の和:10821

約数の個数: 24

約数和(自身を含む): 40536720

約数和(自身を除く): 21449780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10723, 21446, 42892, 53615, 107230, 214460, 954347, 1908694, 3817388, 4771735, 9543470, 19086940]

約数ペア:

[(1, 19086940), (2, 9543470), (4, 4771735), (5, 3817388), (10, 1908694), (20, 954347), (89, 214460), (178, 107230), (356, 53615), (445, 42892), (890, 21446), (1780, 10723)]