18900987

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{11393}}^1$

素因数の和:11482

約数の個数: 16

約数和(自身を含む): 29168640

約数和(自身を除く): 10267653

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 11393, 34179, 79751, 239253, 900047, 2700141, 6300329, 18900987]

約数ペア:

[(1, 18900987), (3, 6300329), (7, 2700141), (21, 900047), (79, 239253), (237, 79751), (553, 34179), (1659, 11393)]