21605907

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{4259}}^1$

素因数の和:4370

約数の個数: 16

約数和(自身を含む): 30672000

約数和(自身を除く): 9066093

約数列:

[1, 3, 19, 57, 89, 267, 1691, 4259, 5073, 12777, 80921, 242763, 379051, 1137153, 7201969, 21605907]

約数ペア:

[(1, 21605907), (3, 7201969), (19, 1137153), (57, 379051), (89, 242763), (267, 80921), (1691, 12777), (4259, 5073)]