20911352

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 28682248

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 83, 88, 154, 166, 308, 332, 409, 581, 616, 664, 818, 913, 1162, 1636, 1826, 2324, 2863, 3272, 3652, 4499, 4648, 5726, 6391, 7304, 8998, 11452, 12782, 17996, 22904, 25564, 31493, 33947, 35992, 51128, 62986, 67894, 125972, 135788, 237629, 251944, 271576, 373417, 475258, 746834, 950516, 1493668, 1901032, 2613919, 2987336, 5227838, 10455676, 20911352]

約数ペア:

[(1, 20911352), (2, 10455676), (4, 5227838), (7, 2987336), (8, 2613919), (11, 1901032), (14, 1493668), (22, 950516), (28, 746834), (44, 475258), (56, 373417), (77, 271576), (83, 251944), (88, 237629), (154, 135788), (166, 125972), (308, 67894), (332, 62986), (409, 51128), (581, 35992), (616, 33947), (664, 31493), (818, 25564), (913, 22904), (1162, 17996), (1636, 12782), (1826, 11452), (2324, 8998), (2863, 7304), (3272, 6391), (3652, 5726), (4499, 4648)]