12961275

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4019}}^1$

素因数の和:4075

約数の個数: 24

約数和(自身を含む): 21933120

約数和(自身を除く): 8971845

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 4019, 12057, 20095, 60285, 100475, 172817, 301425, 518451, 864085, 2592255, 4320425, 12961275]

約数ペア:

[(1, 12961275), (3, 4320425), (5, 2592255), (15, 864085), (25, 518451), (43, 301425), (75, 172817), (129, 100475), (215, 60285), (645, 20095), (1075, 12057), (3225, 4019)]