18942575

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 24486528

約数和(自身を除く): 5543953

約数列:

[1, 5, 25, 43, 67, 215, 263, 335, 1075, 1315, 1675, 2881, 6575, 11309, 14405, 17621, 56545, 72025, 88105, 282725, 440525, 757703, 3788515, 18942575]

約数ペア:

[(1, 18942575), (5, 3788515), (25, 757703), (43, 440525), (67, 282725), (215, 88105), (263, 72025), (335, 56545), (1075, 17621), (1315, 14405), (1675, 11309), (2881, 6575)]