19911161916

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{1571}}^1\times {\mathrm{15307}}^1$

素因数の和:16911

約数の個数: 72

約数和(自身を含む): 52556160384

約数和(自身を除く): 32644998468

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828, 1571, 3142, 4713, 6284, 9426, 14139, 15307, 18852, 28278, 30614, 36133, 45921, 56556, 61228, 72266, 91842, 108399, 137763, 144532, 183684, 216798, 275526, 325197, 352061, 433596, 551052, 650394, 704122, 1056183, 1300788, 1408244, 2112366, 3168549, 4224732, 6337098, 12674196, 24047297, 48094594, 72141891, 96189188, 144283782, 216425673, 288567564, 432851346, 553087831, 865702692, 1106175662, 1659263493, 2212351324, 3318526986, 4977790479, 6637053972, 9955580958, 19911161916]

約数ペア:

[(1, 19911161916), (2, 9955580958), (3, 6637053972), (4, 4977790479), (6, 3318526986), (9, 2212351324), (12, 1659263493), (18, 1106175662), (23, 865702692), (36, 553087831), (46, 432851346), (69, 288567564), (92, 216425673), (138, 144283782), (207, 96189188), (276, 72141891), (414, 48094594), (828, 24047297), (1571, 12674196), (3142, 6337098), (4713, 4224732), (6284, 3168549), (9426, 2112366), (14139, 1408244), (15307, 1300788), (18852, 1056183), (28278, 704122), (30614, 650394), (36133, 551052), (45921, 433596), (56556, 352061), (61228, 325197), (72266, 275526), (91842, 216798), (108399, 183684), (137763, 144532)]