20171209960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1\times {\mathrm{3329}}^1$

素因数の和:3691

約数の個数: 128

約数和(自身を含む): 50752396800

約数和(自身を除く): 30581186840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 293, 376, 440, 470, 517, 586, 940, 1034, 1172, 1465, 1880, 2068, 2344, 2585, 2930, 3223, 3329, 4136, 5170, 5860, 6446, 6658, 10340, 11720, 12892, 13316, 13771, 16115, 16645, 20680, 25784, 26632, 27542, 32230, 33290, 36619, 55084, 64460, 66580, 68855, 73238, 110168, 128920, 133160, 137710, 146476, 151481, 156463, 183095, 275420, 292952, 302962, 312926, 366190, 550840, 605924, 625852, 732380, 757405, 782315, 975397, 1211848, 1251704, 1464760, 1514810, 1564630, 1721093, 1950794, 3029620, 3129260, 3442186, 3901588, 4876985, 6059240, 6258520, 6884372, 7803176, 8605465, 9753970, 10729367, 13768744, 17210930, 19507940, 21458734, 34421860, 39015880, 42917468, 45843659, 53646835, 68843720, 85834936, 91687318, 107293670, 183374636, 214587340, 229218295, 366749272, 429174680, 458436590, 504280249, 916873180, 1008560498, 1833746360, 2017120996, 2521401245, 4034241992, 5042802490, 10085604980, 20171209960]

約数ペア:

[(1, 20171209960), (2, 10085604980), (4, 5042802490), (5, 4034241992), (8, 2521401245), (10, 2017120996), (11, 1833746360), (20, 1008560498), (22, 916873180), (40, 504280249), (44, 458436590), (47, 429174680), (55, 366749272), (88, 229218295), (94, 214587340), (110, 183374636), (188, 107293670), (220, 91687318), (235, 85834936), (293, 68843720), (376, 53646835), (440, 45843659), (470, 42917468), (517, 39015880), (586, 34421860), (940, 21458734), (1034, 19507940), (1172, 17210930), (1465, 13768744), (1880, 10729367), (2068, 9753970), (2344, 8605465), (2585, 7803176), (2930, 6884372), (3223, 6258520), (3329, 6059240), (4136, 4876985), (5170, 3901588), (5860, 3442186), (6446, 3129260), (6658, 3029620), (10340, 1950794), (11720, 1721093), (12892, 1564630), (13316, 1514810), (13771, 1464760), (16115, 1251704), (16645, 1211848), (20680, 975397), (25784, 782315), (26632, 757405), (27542, 732380), (32230, 625852), (33290, 605924), (36619, 550840), (55084, 366190), (64460, 312926), (66580, 302962), (68855, 292952), (73238, 275420), (110168, 183095), (128920, 156463), (133160, 151481), (137710, 146476)]