19660990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22091}}^1$

素因数の和:22187

約数の個数: 16

約数和(自身を含む): 35789040

約数和(自身を除く): 16128050

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 22091, 44182, 110455, 220910, 1966099, 3932198, 9830495, 19660990]

約数ペア:

[(1, 19660990), (2, 9830495), (5, 3932198), (10, 1966099), (89, 220910), (178, 110455), (445, 44182), (890, 22091)]