21120003

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{397}}^1$

素因数の和:683

約数の個数: 24

約数和(自身を含む): 32037408

約数和(自身を除く): 10917405

約数列:

[1, 3, 9, 23, 69, 207, 257, 397, 771, 1191, 2313, 3573, 5911, 9131, 17733, 27393, 53199, 82179, 102029, 306087, 918261, 2346667, 7040001, 21120003]

約数ペア:

[(1, 21120003), (3, 7040001), (9, 2346667), (23, 918261), (69, 306087), (207, 102029), (257, 82179), (397, 53199), (771, 27393), (1191, 17733), (2313, 9131), (3573, 5911)]