21840035

素因数分解:

$5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{919}}^1$

素因数の和:1035

約数の個数: 24

約数和(自身を含む): 30834720

約数和(自身を除く): 8994685

約数列:

[1, 5, 7, 35, 49, 97, 245, 485, 679, 919, 3395, 4595, 4753, 6433, 23765, 32165, 45031, 89143, 225155, 445715, 624001, 3120005, 4368007, 21840035]

約数ペア:

[(1, 21840035), (5, 4368007), (7, 3120005), (35, 624001), (49, 445715), (97, 225155), (245, 89143), (485, 45031), (679, 32165), (919, 23765), (3395, 6433), (4595, 4753)]