18928815

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{29347}}^1$

素因数の和:29398

約数の個数: 16

約数和(自身を含む): 30991488

約数和(自身を除く): 12062673

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 29347, 88041, 146735, 440205, 1261921, 3785763, 6309605, 18928815]

約数ペア:

[(1, 18928815), (3, 6309605), (5, 3785763), (15, 1261921), (43, 440205), (129, 146735), (215, 88041), (645, 29347)]