21505736

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 27569464

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 59, 92, 118, 161, 184, 236, 283, 322, 413, 472, 566, 644, 826, 1132, 1288, 1357, 1652, 1981, 2264, 2714, 3304, 3962, 5428, 6509, 7924, 9499, 10856, 13018, 15848, 16697, 18998, 26036, 33394, 37996, 45563, 52072, 66788, 75992, 91126, 116879, 133576, 182252, 233758, 364504, 384031, 467516, 768062, 935032, 1536124, 2688217, 3072248, 5376434, 10752868, 21505736]

約数ペア:

[(1, 21505736), (2, 10752868), (4, 5376434), (7, 3072248), (8, 2688217), (14, 1536124), (23, 935032), (28, 768062), (46, 467516), (56, 384031), (59, 364504), (92, 233758), (118, 182252), (161, 133576), (184, 116879), (236, 91126), (283, 75992), (322, 66788), (413, 52072), (472, 45563), (566, 37996), (644, 33394), (826, 26036), (1132, 18998), (1288, 16697), (1357, 15848), (1652, 13018), (1981, 10856), (2264, 9499), (2714, 7924), (3304, 6509), (3962, 5428)]