21000261780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{36493}}^1$

素因数の和:36670

約数の個数: 144

約数和(自身を含む): 66950432640

約数和(自身を除く): 45950170860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 139, 180, 207, 230, 276, 278, 345, 414, 417, 460, 556, 690, 695, 828, 834, 1035, 1251, 1380, 1390, 1668, 2070, 2085, 2502, 2780, 3197, 4140, 4170, 5004, 6255, 6394, 8340, 9591, 12510, 12788, 15985, 19182, 25020, 28773, 31970, 36493, 38364, 47955, 57546, 63940, 72986, 95910, 109479, 115092, 143865, 145972, 182465, 191820, 218958, 287730, 328437, 364930, 437916, 547395, 575460, 656874, 729860, 839339, 1094790, 1313748, 1642185, 1678678, 2189580, 2518017, 3284370, 3357356, 4196695, 5036034, 5072527, 6568740, 7554051, 8393390, 10072068, 10145054, 12590085, 15108102, 15217581, 16786780, 20290108, 25180170, 25362635, 30216204, 30435162, 37770255, 45652743, 50360340, 50725270, 60870324, 75540510, 76087905, 91305486, 101450540, 116668121, 151081020, 152175810, 182610972, 228263715, 233336242, 304351620, 350004363, 456527430, 466672484, 583340605, 700008726, 913054860, 1050013089, 1166681210, 1400017452, 1750021815, 2100026178, 2333362420, 3500043630, 4200052356, 5250065445, 7000087260, 10500130890, 21000261780]

約数ペア:

[(1, 21000261780), (2, 10500130890), (3, 7000087260), (4, 5250065445), (5, 4200052356), (6, 3500043630), (9, 2333362420), (10, 2100026178), (12, 1750021815), (15, 1400017452), (18, 1166681210), (20, 1050013089), (23, 913054860), (30, 700008726), (36, 583340605), (45, 466672484), (46, 456527430), (60, 350004363), (69, 304351620), (90, 233336242), (92, 228263715), (115, 182610972), (138, 152175810), (139, 151081020), (180, 116668121), (207, 101450540), (230, 91305486), (276, 76087905), (278, 75540510), (345, 60870324), (414, 50725270), (417, 50360340), (460, 45652743), (556, 37770255), (690, 30435162), (695, 30216204), (828, 25362635), (834, 25180170), (1035, 20290108), (1251, 16786780), (1380, 15217581), (1390, 15108102), (1668, 12590085), (2070, 10145054), (2085, 10072068), (2502, 8393390), (2780, 7554051), (3197, 6568740), (4140, 5072527), (4170, 5036034), (5004, 4196695), (6255, 3357356), (6394, 3284370), (8340, 2518017), (9591, 2189580), (12510, 1678678), (12788, 1642185), (15985, 1313748), (19182, 1094790), (25020, 839339), (28773, 729860), (31970, 656874), (36493, 575460), (38364, 547395), (47955, 437916), (57546, 364930), (63940, 328437), (72986, 287730), (95910, 218958), (109479, 191820), (115092, 182465), (143865, 145972)]