81798640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{271}}^1$

素因数の和:316

約数の個数: 160

約数和(自身を含む): 242841600

約数和(自身を除く): 161042960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 271, 280, 308, 343, 385, 392, 440, 490, 539, 542, 560, 616, 686, 770, 784, 880, 980, 1078, 1084, 1232, 1355, 1372, 1540, 1715, 1897, 1960, 2156, 2168, 2695, 2710, 2744, 2981, 3080, 3430, 3773, 3794, 3920, 4312, 4336, 5390, 5420, 5488, 5962, 6160, 6860, 7546, 7588, 8624, 9485, 10780, 10840, 11924, 13279, 13720, 14905, 15092, 15176, 18865, 18970, 20867, 21560, 21680, 23848, 26558, 27440, 29810, 30184, 30352, 37730, 37940, 41734, 43120, 47696, 53116, 59620, 60368, 66395, 75460, 75880, 83468, 92953, 104335, 106232, 119240, 132790, 146069, 150920, 151760, 166936, 185906, 208670, 212464, 238480, 265580, 292138, 301840, 333872, 371812, 417340, 464765, 531160, 584276, 730345, 743624, 834680, 929530, 1022483, 1062320, 1168552, 1460690, 1487248, 1669360, 1859060, 2044966, 2337104, 2921380, 3718120, 4089932, 5112415, 5842760, 7436240, 8179864, 10224830, 11685520, 16359728, 20449660, 40899320, 81798640]

約数ペア:

[(1, 81798640), (2, 40899320), (4, 20449660), (5, 16359728), (7, 11685520), (8, 10224830), (10, 8179864), (11, 7436240), (14, 5842760), (16, 5112415), (20, 4089932), (22, 3718120), (28, 2921380), (35, 2337104), (40, 2044966), (44, 1859060), (49, 1669360), (55, 1487248), (56, 1460690), (70, 1168552), (77, 1062320), (80, 1022483), (88, 929530), (98, 834680), (110, 743624), (112, 730345), (140, 584276), (154, 531160), (176, 464765), (196, 417340), (220, 371812), (245, 333872), (271, 301840), (280, 292138), (308, 265580), (343, 238480), (385, 212464), (392, 208670), (440, 185906), (490, 166936), (539, 151760), (542, 150920), (560, 146069), (616, 132790), (686, 119240), (770, 106232), (784, 104335), (880, 92953), (980, 83468), (1078, 75880), (1084, 75460), (1232, 66395), (1355, 60368), (1372, 59620), (1540, 53116), (1715, 47696), (1897, 43120), (1960, 41734), (2156, 37940), (2168, 37730), (2695, 30352), (2710, 30184), (2744, 29810), (2981, 27440), (3080, 26558), (3430, 23848), (3773, 21680), (3794, 21560), (3920, 20867), (4312, 18970), (4336, 18865), (5390, 15176), (5420, 15092), (5488, 14905), (5962, 13720), (6160, 13279), (6860, 11924), (7546, 10840), (7588, 10780), (8624, 9485)]