256565512

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:219

約数の個数: 128

約数和(自身を含む): 607104000

約数和(自身を除く): 350538488

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 59, 61, 67, 76, 118, 122, 133, 134, 152, 236, 244, 266, 268, 413, 427, 469, 472, 488, 532, 536, 826, 854, 938, 1064, 1121, 1159, 1273, 1652, 1708, 1876, 2242, 2318, 2546, 3304, 3416, 3599, 3752, 3953, 4087, 4484, 4636, 5092, 7198, 7847, 7906, 8113, 8174, 8911, 8968, 9272, 10184, 14396, 15694, 15812, 16226, 16348, 17822, 25193, 27671, 28609, 28792, 31388, 31624, 32452, 32696, 35644, 50386, 55342, 57218, 62776, 64904, 68381, 71288, 75107, 77653, 100772, 110684, 114436, 136762, 150214, 155306, 201544, 221368, 228872, 241133, 273524, 300428, 310612, 478667, 482266, 525749, 543571, 547048, 600856, 621224, 957334, 964532, 1051498, 1087142, 1687931, 1914668, 1929064, 2102996, 2174284, 3375862, 3829336, 4205992, 4348568, 4581527, 6751724, 9163054, 13503448, 18326108, 32070689, 36652216, 64141378, 128282756, 256565512]

約数ペア:

[(1, 256565512), (2, 128282756), (4, 64141378), (7, 36652216), (8, 32070689), (14, 18326108), (19, 13503448), (28, 9163054), (38, 6751724), (56, 4581527), (59, 4348568), (61, 4205992), (67, 3829336), (76, 3375862), (118, 2174284), (122, 2102996), (133, 1929064), (134, 1914668), (152, 1687931), (236, 1087142), (244, 1051498), (266, 964532), (268, 957334), (413, 621224), (427, 600856), (469, 547048), (472, 543571), (488, 525749), (532, 482266), (536, 478667), (826, 310612), (854, 300428), (938, 273524), (1064, 241133), (1121, 228872), (1159, 221368), (1273, 201544), (1652, 155306), (1708, 150214), (1876, 136762), (2242, 114436), (2318, 110684), (2546, 100772), (3304, 77653), (3416, 75107), (3599, 71288), (3752, 68381), (3953, 64904), (4087, 62776), (4484, 57218), (4636, 55342), (5092, 50386), (7198, 35644), (7847, 32696), (7906, 32452), (8113, 31624), (8174, 31388), (8911, 28792), (8968, 28609), (9272, 27671), (10184, 25193), (14396, 17822), (15694, 16348), (15812, 16226)]