19981779

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{3967}}^1$

素因数の和:4066

約数の個数: 16

約数和(自身を含む): 28188672

約数和(自身を除く): 8206893

約数列:

[1, 3, 23, 69, 73, 219, 1679, 3967, 5037, 11901, 91241, 273723, 289591, 868773, 6660593, 19981779]

約数ペア:

[(1, 19981779), (3, 6660593), (23, 868773), (69, 289591), (73, 273723), (219, 91241), (1679, 11901), (3967, 5037)]