890721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 1450176

約数和(自身を除く): 559455

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 331, 897, 993, 2691, 2979, 4303, 7613, 12909, 22839, 38727, 68517, 98969, 296907, 890721]

約数ペア:

[(1, 890721), (3, 296907), (9, 98969), (13, 68517), (23, 38727), (39, 22839), (69, 12909), (117, 7613), (207, 4303), (299, 2979), (331, 2691), (897, 993)]