18720232480

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{587947}}^1$

素因数の和:588161

約数の個数: 48

約数和(自身を含む): 44448868800

約数和(自身を除く): 25728636320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 15920, 31840, 587947, 1175894, 2351788, 2939735, 4703576, 5879470, 9407152, 11758940, 18814304, 23517880, 47035760, 94071520, 117001453, 234002906, 468005812, 585007265, 936011624, 1170014530, 1872023248, 2340029060, 3744046496, 4680058120, 9360116240, 18720232480]

約数ペア:

[(1, 18720232480), (2, 9360116240), (4, 4680058120), (5, 3744046496), (8, 2340029060), (10, 1872023248), (16, 1170014530), (20, 936011624), (32, 585007265), (40, 468005812), (80, 234002906), (160, 117001453), (199, 94071520), (398, 47035760), (796, 23517880), (995, 18814304), (1592, 11758940), (1990, 9407152), (3184, 5879470), (3980, 4703576), (6368, 2939735), (7960, 2351788), (15920, 1175894), (31840, 587947)]