18989073

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3499}}^1$

素因数の和:3578

約数の個数: 20

約数和(自身を含む): 28798000

約数和(自身を除く): 9808927

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3499, 5427, 10497, 31491, 94473, 234433, 283419, 703299, 2109897, 6329691, 18989073]

約数ペア:

[(1, 18989073), (3, 6329691), (9, 2109897), (27, 703299), (67, 283419), (81, 234433), (201, 94473), (603, 31491), (1809, 10497), (3499, 5427)]