18678729

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^2\times {\mathrm{73}}^1$

素因数の和:229

約数の個数: 24

約数和(自身を含む): 26977440

約数和(自身を除く): 8298711

約数列:

[1, 3, 19, 57, 67, 73, 201, 219, 1273, 1387, 3819, 4161, 4489, 4891, 13467, 14673, 85291, 92929, 255873, 278787, 327697, 983091, 6226243, 18678729]

約数ペア:

[(1, 18678729), (3, 6226243), (19, 983091), (57, 327697), (67, 278787), (73, 255873), (201, 92929), (219, 85291), (1273, 14673), (1387, 13467), (3819, 4891), (4161, 4489)]