18238977

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 29922048

約数和(自身を除く): 11683071

約数列:

[1, 3, 9, 17, 23, 51, 69, 71, 73, 153, 207, 213, 219, 391, 639, 657, 1173, 1207, 1241, 1633, 1679, 3519, 3621, 3723, 4899, 5037, 5183, 10863, 11169, 14697, 15111, 15549, 27761, 28543, 46647, 83283, 85629, 88111, 119209, 249849, 256887, 264333, 357627, 792999, 1072881, 2026553, 6079659, 18238977]

約数ペア:

[(1, 18238977), (3, 6079659), (9, 2026553), (17, 1072881), (23, 792999), (51, 357627), (69, 264333), (71, 256887), (73, 249849), (153, 119209), (207, 88111), (213, 85629), (219, 83283), (391, 46647), (639, 28543), (657, 27761), (1173, 15549), (1207, 15111), (1241, 14697), (1633, 11169), (1679, 10863), (3519, 5183), (3621, 5037), (3723, 4899)]