21000659368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1\times {\mathrm{827}}^1$

素因数の和:1187

約数の個数: 128

約数和(自身を含む): 45971089920

約数和(自身を除く): 24970430552

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 53, 68, 104, 106, 136, 212, 221, 271, 424, 442, 542, 689, 827, 884, 901, 1084, 1378, 1654, 1768, 1802, 2168, 2756, 3308, 3523, 3604, 4607, 5512, 6616, 7046, 7208, 9214, 10751, 11713, 14059, 14092, 14363, 18428, 21502, 23426, 28118, 28184, 28726, 36856, 43004, 43831, 46852, 56236, 57452, 59891, 86008, 87662, 93704, 112472, 114904, 119782, 175324, 182767, 186719, 224117, 239564, 244171, 350648, 365534, 373438, 448234, 479128, 488342, 569803, 731068, 745127, 746876, 896468, 976684, 1139606, 1462136, 1490254, 1493752, 1792936, 1953368, 2279212, 2913521, 2980508, 3174223, 3809989, 4558424, 5827042, 5961016, 6348446, 7619978, 9686651, 11654084, 11878201, 12696892, 15239956, 19373302, 23308168, 23756402, 25393784, 30479912, 38746604, 47512804, 49529857, 77493208, 95025608, 99059714, 154416613, 198119428, 201929417, 308833226, 396238856, 403858834, 617666452, 807717668, 1235332904, 1615435336, 2625082421, 5250164842, 10500329684, 21000659368]

約数ペア:

[(1, 21000659368), (2, 10500329684), (4, 5250164842), (8, 2625082421), (13, 1615435336), (17, 1235332904), (26, 807717668), (34, 617666452), (52, 403858834), (53, 396238856), (68, 308833226), (104, 201929417), (106, 198119428), (136, 154416613), (212, 99059714), (221, 95025608), (271, 77493208), (424, 49529857), (442, 47512804), (542, 38746604), (689, 30479912), (827, 25393784), (884, 23756402), (901, 23308168), (1084, 19373302), (1378, 15239956), (1654, 12696892), (1768, 11878201), (1802, 11654084), (2168, 9686651), (2756, 7619978), (3308, 6348446), (3523, 5961016), (3604, 5827042), (4607, 4558424), (5512, 3809989), (6616, 3174223), (7046, 2980508), (7208, 2913521), (9214, 2279212), (10751, 1953368), (11713, 1792936), (14059, 1493752), (14092, 1490254), (14363, 1462136), (18428, 1139606), (21502, 976684), (23426, 896468), (28118, 746876), (28184, 745127), (28726, 731068), (36856, 569803), (43004, 488342), (43831, 479128), (46852, 448234), (56236, 373438), (57452, 365534), (59891, 350648), (86008, 244171), (87662, 239564), (93704, 224117), (112472, 186719), (114904, 182767), (119782, 175324)]