21990656

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 48271104

約数和(自身を除く): 26280448

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 128, 136, 163, 248, 256, 272, 326, 496, 527, 544, 652, 992, 1054, 1088, 1304, 1984, 2108, 2176, 2608, 2771, 3968, 4216, 4352, 5053, 5216, 5542, 7936, 8432, 10106, 10432, 11084, 16864, 20212, 20864, 22168, 33728, 40424, 41728, 44336, 67456, 80848, 85901, 88672, 134912, 161696, 171802, 177344, 323392, 343604, 354688, 646784, 687208, 709376, 1293568, 1374416, 2748832, 5497664, 10995328, 21990656]

約数ペア:

[(1, 21990656), (2, 10995328), (4, 5497664), (8, 2748832), (16, 1374416), (17, 1293568), (31, 709376), (32, 687208), (34, 646784), (62, 354688), (64, 343604), (68, 323392), (124, 177344), (128, 171802), (136, 161696), (163, 134912), (248, 88672), (256, 85901), (272, 80848), (326, 67456), (496, 44336), (527, 41728), (544, 40424), (652, 33728), (992, 22168), (1054, 20864), (1088, 20212), (1304, 16864), (1984, 11084), (2108, 10432), (2176, 10106), (2608, 8432), (2771, 7936), (3968, 5542), (4216, 5216), (4352, 5053)]