65889975

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{20431}}^1$

素因数の和:20487

約数の個数: 24

約数和(自身を含む): 111476992

約数和(自身を除く): 45587017

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 20431, 61293, 102155, 306465, 510775, 878533, 1532325, 2635599, 4392665, 13177995, 21963325, 65889975]

約数ペア:

[(1, 65889975), (3, 21963325), (5, 13177995), (15, 4392665), (25, 2635599), (43, 1532325), (75, 878533), (129, 510775), (215, 306465), (645, 102155), (1075, 61293), (3225, 20431)]