18625665

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 12395391

約数列:

[1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 431, 645, 1005, 1293, 2155, 2881, 6465, 8643, 14405, 18533, 28877, 43215, 55599, 86631, 92665, 144385, 277995, 433155, 1241711, 3725133, 6208555, 18625665]

約数ペア:

[(1, 18625665), (3, 6208555), (5, 3725133), (15, 1241711), (43, 433155), (67, 277995), (129, 144385), (201, 92665), (215, 86631), (335, 55599), (431, 43215), (645, 28877), (1005, 18533), (1293, 14405), (2155, 8643), (2881, 6465)]