128704256

素因数分解:

$2^8\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 266815584

約数和(自身を除く): 138111328

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 73, 97, 128, 142, 146, 194, 256, 284, 292, 388, 568, 584, 776, 1136, 1168, 1552, 2272, 2336, 3104, 4544, 4672, 5183, 6208, 6887, 7081, 9088, 9344, 10366, 12416, 13774, 14162, 18176, 18688, 20732, 24832, 27548, 28324, 41464, 55096, 56648, 82928, 110192, 113296, 165856, 220384, 226592, 331712, 440768, 453184, 502751, 663424, 881536, 906368, 1005502, 1326848, 1763072, 1812736, 2011004, 4022008, 8044016, 16088032, 32176064, 64352128, 128704256]

約数ペア:

[(1, 128704256), (2, 64352128), (4, 32176064), (8, 16088032), (16, 8044016), (32, 4022008), (64, 2011004), (71, 1812736), (73, 1763072), (97, 1326848), (128, 1005502), (142, 906368), (146, 881536), (194, 663424), (256, 502751), (284, 453184), (292, 440768), (388, 331712), (568, 226592), (584, 220384), (776, 165856), (1136, 113296), (1168, 110192), (1552, 82928), (2272, 56648), (2336, 55096), (3104, 41464), (4544, 28324), (4672, 27548), (5183, 24832), (6208, 20732), (6887, 18688), (7081, 18176), (9088, 14162), (9344, 13774), (10366, 12416)]