21698656

素因数分解:

$2^5\times 7^1\times {\mathrm{157}}^1\times {\mathrm{617}}^1$

素因数の和:791

約数の個数: 48

約数和(自身を含む): 49212576

約数和(自身を除く): 27513920

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 157, 224, 314, 617, 628, 1099, 1234, 1256, 2198, 2468, 2512, 4319, 4396, 4936, 5024, 8638, 8792, 9872, 17276, 17584, 19744, 34552, 35168, 69104, 96869, 138208, 193738, 387476, 678083, 774952, 1356166, 1549904, 2712332, 3099808, 5424664, 10849328, 21698656]

約数ペア:

[(1, 21698656), (2, 10849328), (4, 5424664), (7, 3099808), (8, 2712332), (14, 1549904), (16, 1356166), (28, 774952), (32, 678083), (56, 387476), (112, 193738), (157, 138208), (224, 96869), (314, 69104), (617, 35168), (628, 34552), (1099, 19744), (1234, 17584), (1256, 17276), (2198, 9872), (2468, 8792), (2512, 8638), (4319, 5024), (4396, 4936)]