820883360

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:535

約数の個数: 144

約数和(自身を含む): 2156754600

約数和(自身を除く): 1335871240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 109, 110, 121, 160, 176, 218, 220, 242, 352, 389, 436, 440, 484, 545, 605, 778, 872, 880, 968, 1090, 1199, 1210, 1556, 1744, 1760, 1936, 1945, 2180, 2398, 2420, 3112, 3488, 3872, 3890, 4279, 4360, 4796, 4840, 5995, 6224, 7780, 8558, 8720, 9592, 9680, 11990, 12448, 13189, 15560, 17116, 17440, 19184, 19360, 21395, 23980, 26378, 31120, 34232, 38368, 42401, 42790, 47069, 47960, 52756, 62240, 65945, 68464, 84802, 85580, 94138, 95920, 105512, 131890, 136928, 169604, 171160, 188276, 191840, 211024, 212005, 235345, 263780, 339208, 342320, 376552, 422048, 424010, 466411, 470690, 527560, 678416, 684640, 753104, 848020, 932822, 941380, 1055120, 1356832, 1506208, 1696040, 1865644, 1882760, 2110240, 2332055, 3392080, 3731288, 3765520, 4664110, 5130521, 6784160, 7462576, 7531040, 9328220, 10261042, 14925152, 18656440, 20522084, 25652605, 37312880, 41044168, 51305210, 74625760, 82088336, 102610420, 164176672, 205220840, 410441680, 820883360]

約数ペア:

[(1, 820883360), (2, 410441680), (4, 205220840), (5, 164176672), (8, 102610420), (10, 82088336), (11, 74625760), (16, 51305210), (20, 41044168), (22, 37312880), (32, 25652605), (40, 20522084), (44, 18656440), (55, 14925152), (80, 10261042), (88, 9328220), (109, 7531040), (110, 7462576), (121, 6784160), (160, 5130521), (176, 4664110), (218, 3765520), (220, 3731288), (242, 3392080), (352, 2332055), (389, 2110240), (436, 1882760), (440, 1865644), (484, 1696040), (545, 1506208), (605, 1356832), (778, 1055120), (872, 941380), (880, 932822), (968, 848020), (1090, 753104), (1199, 684640), (1210, 678416), (1556, 527560), (1744, 470690), (1760, 466411), (1936, 424010), (1945, 422048), (2180, 376552), (2398, 342320), (2420, 339208), (3112, 263780), (3488, 235345), (3872, 212005), (3890, 211024), (4279, 191840), (4360, 188276), (4796, 171160), (4840, 169604), (5995, 136928), (6224, 131890), (7780, 105512), (8558, 95920), (8720, 94138), (9592, 85580), (9680, 84802), (11990, 68464), (12448, 65945), (13189, 62240), (15560, 52756), (17116, 47960), (17440, 47069), (19184, 42790), (19360, 42401), (21395, 38368), (23980, 34232), (26378, 31120)]