9890215

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 12263328

約数和(自身を除く): 2373113

約数列:

[1, 5, 43, 157, 215, 293, 785, 1465, 6751, 12599, 33755, 46001, 62995, 230005, 1978043, 9890215]

約数ペア:

[(1, 9890215), (5, 1978043), (43, 230005), (157, 62995), (215, 46001), (293, 33755), (785, 12599), (1465, 6751)]