21605910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{720197}}^1$

素因数の和:720207

約数の個数: 16

約数和(自身を含む): 51854256

約数和(自身を除く): 30248346

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 720197, 1440394, 2160591, 3600985, 4321182, 7201970, 10802955, 21605910]

約数ペア:

[(1, 21605910), (2, 10802955), (3, 7201970), (5, 4321182), (6, 3600985), (10, 2160591), (15, 1440394), (30, 720197)]