20631999

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 29840400

約数和(自身を除く): 9208401

約数列:

[1, 3, 17, 51, 53, 159, 289, 449, 867, 901, 1347, 2703, 7633, 15317, 22899, 23797, 45951, 71391, 129761, 389283, 404549, 1213647, 6877333, 20631999]

約数ペア:

[(1, 20631999), (3, 6877333), (17, 1213647), (51, 404549), (53, 389283), (159, 129761), (289, 71391), (449, 45951), (867, 23797), (901, 22899), (1347, 15317), (2703, 7633)]