80289280

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:499

約数の個数: 80

約数和(自身を含む): 195433920

約数和(自身を除く): 115144640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 397, 512, 632, 640, 790, 794, 1264, 1280, 1580, 1588, 1985, 2528, 2560, 3160, 3176, 3970, 5056, 6320, 6352, 7940, 10112, 12640, 12704, 15880, 20224, 25280, 25408, 31363, 31760, 40448, 50560, 50816, 62726, 63520, 101120, 101632, 125452, 127040, 156815, 202240, 203264, 250904, 254080, 313630, 501808, 508160, 627260, 1003616, 1016320, 1254520, 2007232, 2509040, 4014464, 5018080, 8028928, 10036160, 16057856, 20072320, 40144640, 80289280]

約数ペア:

[(1, 80289280), (2, 40144640), (4, 20072320), (5, 16057856), (8, 10036160), (10, 8028928), (16, 5018080), (20, 4014464), (32, 2509040), (40, 2007232), (64, 1254520), (79, 1016320), (80, 1003616), (128, 627260), (158, 508160), (160, 501808), (256, 313630), (316, 254080), (320, 250904), (395, 203264), (397, 202240), (512, 156815), (632, 127040), (640, 125452), (790, 101632), (794, 101120), (1264, 63520), (1280, 62726), (1580, 50816), (1588, 50560), (1985, 40448), (2528, 31760), (2560, 31363), (3160, 25408), (3176, 25280), (3970, 20224), (5056, 15880), (6320, 12704), (6352, 12640), (7940, 10112)]