256931584

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:346

約数の個数: 144

約数和(自身を含む): 649010880

約数和(自身を除く): 392079296

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 41, 52, 56, 64, 82, 91, 104, 112, 128, 164, 182, 208, 224, 256, 269, 287, 328, 364, 416, 448, 533, 538, 574, 656, 728, 832, 896, 1066, 1076, 1148, 1312, 1456, 1664, 1792, 1883, 2132, 2152, 2296, 2624, 2912, 3328, 3497, 3731, 3766, 4264, 4304, 4592, 5248, 5824, 6994, 7462, 7532, 8528, 8608, 9184, 10496, 11029, 11648, 13988, 14924, 15064, 17056, 17216, 18368, 22058, 23296, 24479, 27976, 29848, 30128, 34112, 34432, 36736, 44116, 48958, 55952, 59696, 60256, 68224, 68864, 73472, 77203, 88232, 97916, 111904, 119392, 120512, 136448, 143377, 154406, 176464, 195832, 223808, 238784, 241024, 286754, 308812, 352928, 391664, 447616, 477568, 482048, 573508, 617624, 705856, 783328, 895232, 955136, 1003639, 1147016, 1235248, 1411712, 1566656, 2007278, 2294032, 2470496, 2823424, 3133312, 4014556, 4588064, 4940992, 6266624, 8029112, 9176128, 9881984, 16058224, 18352256, 19763968, 32116448, 36704512, 64232896, 128465792, 256931584]

約数ペア:

[(1, 256931584), (2, 128465792), (4, 64232896), (7, 36704512), (8, 32116448), (13, 19763968), (14, 18352256), (16, 16058224), (26, 9881984), (28, 9176128), (32, 8029112), (41, 6266624), (52, 4940992), (56, 4588064), (64, 4014556), (82, 3133312), (91, 2823424), (104, 2470496), (112, 2294032), (128, 2007278), (164, 1566656), (182, 1411712), (208, 1235248), (224, 1147016), (256, 1003639), (269, 955136), (287, 895232), (328, 783328), (364, 705856), (416, 617624), (448, 573508), (533, 482048), (538, 477568), (574, 447616), (656, 391664), (728, 352928), (832, 308812), (896, 286754), (1066, 241024), (1076, 238784), (1148, 223808), (1312, 195832), (1456, 176464), (1664, 154406), (1792, 143377), (1883, 136448), (2132, 120512), (2152, 119392), (2296, 111904), (2624, 97916), (2912, 88232), (3328, 77203), (3497, 73472), (3731, 68864), (3766, 68224), (4264, 60256), (4304, 59696), (4592, 55952), (5248, 48958), (5824, 44116), (6994, 36736), (7462, 34432), (7532, 34112), (8528, 30128), (8608, 29848), (9184, 27976), (10496, 24479), (11029, 23296), (11648, 22058), (13988, 18368), (14924, 17216), (15064, 17056)]