80491520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 88

約数和(自身を含む): 196512000

約数和(自身を除く): 116020480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 199, 256, 316, 320, 395, 398, 512, 632, 640, 790, 796, 995, 1024, 1264, 1280, 1580, 1592, 1990, 2528, 2560, 3160, 3184, 3980, 5056, 5120, 6320, 6368, 7960, 10112, 12640, 12736, 15721, 15920, 20224, 25280, 25472, 31442, 31840, 40448, 50560, 50944, 62884, 63680, 78605, 80896, 101120, 101888, 125768, 127360, 157210, 202240, 203776, 251536, 254720, 314420, 404480, 503072, 509440, 628840, 1006144, 1018880, 1257680, 2012288, 2515360, 4024576, 5030720, 8049152, 10061440, 16098304, 20122880, 40245760, 80491520]

約数ペア:

[(1, 80491520), (2, 40245760), (4, 20122880), (5, 16098304), (8, 10061440), (10, 8049152), (16, 5030720), (20, 4024576), (32, 2515360), (40, 2012288), (64, 1257680), (79, 1018880), (80, 1006144), (128, 628840), (158, 509440), (160, 503072), (199, 404480), (256, 314420), (316, 254720), (320, 251536), (395, 203776), (398, 202240), (512, 157210), (632, 127360), (640, 125768), (790, 101888), (796, 101120), (995, 80896), (1024, 78605), (1264, 63680), (1280, 62884), (1580, 50944), (1592, 50560), (1990, 40448), (2528, 31840), (2560, 31442), (3160, 25472), (3184, 25280), (3980, 20224), (5056, 15920), (5120, 15721), (6320, 12736), (6368, 12640), (7960, 10112)]