18215517

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 9218211

約数列:

[1, 3, 17, 23, 51, 53, 69, 159, 293, 391, 879, 901, 1173, 1219, 2703, 3657, 4981, 6739, 14943, 15529, 20217, 20723, 46587, 62169, 114563, 263993, 343689, 357167, 791979, 1071501, 6071839, 18215517]

約数ペア:

[(1, 18215517), (3, 6071839), (17, 1071501), (23, 791979), (51, 357167), (53, 343689), (69, 263993), (159, 114563), (293, 62169), (391, 46587), (879, 20723), (901, 20217), (1173, 15529), (1219, 14943), (2703, 6739), (3657, 4981)]