21000125

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{3907}}^1$

素因数の和:3965

約数の個数: 16

約数和(自身を含む): 26824512

約数和(自身を除く): 5824387

約数列:

[1, 5, 25, 43, 125, 215, 1075, 3907, 5375, 19535, 97675, 168001, 488375, 840005, 4200025, 21000125]

約数ペア:

[(1, 21000125), (5, 4200025), (25, 840005), (43, 488375), (125, 168001), (215, 97675), (1075, 19535), (3907, 5375)]