207942021

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{19079}}^1$

素因数の和:19265

約数の個数: 24

約数和(自身を含む): 345271680

約数和(自身を除く): 137329659

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 3633, 10899, 19079, 57237, 133553, 171711, 400659, 1201977, 3300667, 9902001, 23104669, 29706003, 69314007, 207942021]

約数ペア:

[(1, 207942021), (3, 69314007), (7, 29706003), (9, 23104669), (21, 9902001), (63, 3300667), (173, 1201977), (519, 400659), (1211, 171711), (1557, 133553), (3633, 57237), (10899, 19079)]