21038640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1789}}^1$

素因数の和:1819

約数の個数: 120

約数和(自身を含む): 75910320

約数和(自身を除く): 54871680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1789, 1960, 2352, 2940, 3578, 3920, 5367, 5880, 7156, 8945, 10734, 11760, 12523, 14312, 17890, 21468, 25046, 26835, 28624, 35780, 37569, 42936, 50092, 53670, 62615, 71560, 75138, 85872, 87661, 100184, 107340, 125230, 143120, 150276, 175322, 187845, 200368, 214680, 250460, 262983, 300552, 350644, 375690, 429360, 438305, 500920, 525966, 601104, 701288, 751380, 876610, 1001840, 1051932, 1314915, 1402576, 1502760, 1753220, 2103864, 2629830, 3005520, 3506440, 4207728, 5259660, 7012880, 10519320, 21038640]

約数ペア:

[(1, 21038640), (2, 10519320), (3, 7012880), (4, 5259660), (5, 4207728), (6, 3506440), (7, 3005520), (8, 2629830), (10, 2103864), (12, 1753220), (14, 1502760), (15, 1402576), (16, 1314915), (20, 1051932), (21, 1001840), (24, 876610), (28, 751380), (30, 701288), (35, 601104), (40, 525966), (42, 500920), (48, 438305), (49, 429360), (56, 375690), (60, 350644), (70, 300552), (80, 262983), (84, 250460), (98, 214680), (105, 200368), (112, 187845), (120, 175322), (140, 150276), (147, 143120), (168, 125230), (196, 107340), (210, 100184), (240, 87661), (245, 85872), (280, 75138), (294, 71560), (336, 62615), (392, 53670), (420, 50092), (490, 42936), (560, 37569), (588, 35780), (735, 28624), (784, 26835), (840, 25046), (980, 21468), (1176, 17890), (1470, 14312), (1680, 12523), (1789, 11760), (1960, 10734), (2352, 8945), (2940, 7156), (3578, 5880), (3920, 5367)]