18890145

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8231}}^1$

素因数の和:8262

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 16672095

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8231, 24693, 41155, 74079, 123465, 139927, 222237, 370395, 419781, 699635, 1111185, 1259343, 2098905, 3778029, 6296715, 18890145]

約数ペア:

[(1, 18890145), (3, 6296715), (5, 3778029), (9, 2098905), (15, 1259343), (17, 1111185), (27, 699635), (45, 419781), (51, 370395), (85, 222237), (135, 139927), (153, 123465), (255, 74079), (459, 41155), (765, 24693), (2295, 8231)]