20672848

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1409}}^1$

素因数の和:1555

約数の個数: 40

約数和(自身を含む): 46157760

約数和(自身を除く): 25484912

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1409, 1834, 2096, 2818, 3668, 5636, 7336, 9863, 11272, 14672, 19726, 22544, 39452, 78904, 157808, 184579, 369158, 738316, 1292053, 1476632, 2584106, 2953264, 5168212, 10336424, 20672848]

約数ペア:

[(1, 20672848), (2, 10336424), (4, 5168212), (7, 2953264), (8, 2584106), (14, 1476632), (16, 1292053), (28, 738316), (56, 369158), (112, 184579), (131, 157808), (262, 78904), (524, 39452), (917, 22544), (1048, 19726), (1409, 14672), (1834, 11272), (2096, 9863), (2818, 7336), (3668, 5636)]