9919940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5573}}^1$

素因数の和:5671

約数の個数: 24

約数和(自身を含む): 21069720

約数和(自身を除く): 11149780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 5573, 11146, 22292, 27865, 55730, 111460, 495997, 991994, 1983988, 2479985, 4959970, 9919940]

約数ペア:

[(1, 9919940), (2, 4959970), (4, 2479985), (5, 1983988), (10, 991994), (20, 495997), (89, 111460), (178, 55730), (356, 27865), (445, 22292), (890, 11146), (1780, 5573)]