207921680

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:456

約数の個数: 80

約数和(自身を含む): 494968320

約数和(自身を除く): 287046640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 167, 197, 316, 334, 394, 395, 632, 668, 788, 790, 835, 985, 1264, 1336, 1576, 1580, 1670, 1970, 2672, 3152, 3160, 3340, 3940, 6320, 6680, 7880, 13193, 13360, 15563, 15760, 26386, 31126, 32899, 52772, 62252, 65798, 65965, 77815, 105544, 124504, 131596, 131930, 155630, 164495, 211088, 249008, 263192, 263860, 311260, 328990, 526384, 527720, 622520, 657980, 1055440, 1245040, 1315960, 2599021, 2631920, 5198042, 10396084, 12995105, 20792168, 25990210, 41584336, 51980420, 103960840, 207921680]

約数ペア:

[(1, 207921680), (2, 103960840), (4, 51980420), (5, 41584336), (8, 25990210), (10, 20792168), (16, 12995105), (20, 10396084), (40, 5198042), (79, 2631920), (80, 2599021), (158, 1315960), (167, 1245040), (197, 1055440), (316, 657980), (334, 622520), (394, 527720), (395, 526384), (632, 328990), (668, 311260), (788, 263860), (790, 263192), (835, 249008), (985, 211088), (1264, 164495), (1336, 155630), (1576, 131930), (1580, 131596), (1670, 124504), (1970, 105544), (2672, 77815), (3152, 65965), (3160, 65798), (3340, 62252), (3940, 52772), (6320, 32899), (6680, 31126), (7880, 26386), (13193, 15760), (13360, 15563)]