20831307

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:152

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 15664053

約数列:

[1, 3, 7, 17, 21, 23, 43, 51, 59, 69, 119, 129, 161, 177, 301, 357, 391, 413, 483, 731, 903, 989, 1003, 1173, 1239, 1357, 2193, 2537, 2737, 2967, 3009, 4071, 5117, 6923, 7021, 7611, 8211, 9499, 15351, 16813, 17759, 20769, 21063, 23069, 28497, 43129, 50439, 53277, 58351, 69207, 117691, 129387, 161483, 175053, 301903, 353073, 408457, 484449, 905709, 991967, 1225371, 2975901, 6943769, 20831307]

約数ペア:

[(1, 20831307), (3, 6943769), (7, 2975901), (17, 1225371), (21, 991967), (23, 905709), (43, 484449), (51, 408457), (59, 353073), (69, 301903), (119, 175053), (129, 161483), (161, 129387), (177, 117691), (301, 69207), (357, 58351), (391, 53277), (413, 50439), (483, 43129), (731, 28497), (903, 23069), (989, 21063), (1003, 20769), (1173, 17759), (1239, 16813), (1357, 15351), (2193, 9499), (2537, 8211), (2737, 7611), (2967, 7021), (3009, 6923), (4071, 5117)]