19951557

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 29922048

約数和(自身を除く): 9970491

約数列:

[1, 3, 17, 23, 51, 69, 73, 219, 233, 391, 699, 1173, 1241, 1679, 3723, 3961, 5037, 5359, 11883, 16077, 17009, 28543, 51027, 85629, 91103, 273309, 289153, 391207, 867459, 1173621, 6650519, 19951557]

約数ペア:

[(1, 19951557), (3, 6650519), (17, 1173621), (23, 867459), (51, 391207), (69, 289153), (73, 273309), (219, 91103), (233, 85629), (391, 51027), (699, 28543), (1173, 17009), (1241, 16077), (1679, 11883), (3723, 5359), (3961, 5037)]