20191648720

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1283}}^1\times {\mathrm{1549}}^1$

素因数の和:2972

約数の個数: 80

約数和(自身を含む): 47382681600

約数和(自身を除く): 27191032880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 1283, 1549, 2032, 2540, 2566, 3098, 5080, 5132, 6196, 6415, 7745, 10160, 10264, 12392, 12830, 15490, 20528, 24784, 25660, 30980, 51320, 61960, 102640, 123920, 162941, 196723, 325882, 393446, 651764, 786892, 814705, 983615, 1303528, 1573784, 1629410, 1967230, 1987367, 2607056, 3147568, 3258820, 3934460, 3974734, 6517640, 7868920, 7949468, 9936835, 13035280, 15737840, 15898936, 19873670, 31797872, 39747340, 79494680, 158989360, 252395609, 504791218, 1009582436, 1261978045, 2019164872, 2523956090, 4038329744, 5047912180, 10095824360, 20191648720]

約数ペア:

[(1, 20191648720), (2, 10095824360), (4, 5047912180), (5, 4038329744), (8, 2523956090), (10, 2019164872), (16, 1261978045), (20, 1009582436), (40, 504791218), (80, 252395609), (127, 158989360), (254, 79494680), (508, 39747340), (635, 31797872), (1016, 19873670), (1270, 15898936), (1283, 15737840), (1549, 13035280), (2032, 9936835), (2540, 7949468), (2566, 7868920), (3098, 6517640), (5080, 3974734), (5132, 3934460), (6196, 3258820), (6415, 3147568), (7745, 2607056), (10160, 1987367), (10264, 1967230), (12392, 1629410), (12830, 1573784), (15490, 1303528), (20528, 983615), (24784, 814705), (25660, 786892), (30980, 651764), (51320, 393446), (61960, 325882), (102640, 196723), (123920, 162941)]