21611324

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12653}}^1$

素因数の和:12725

約数の個数: 24

約数和(自身を含む): 43934688

約数和(自身を除く): 22323364

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12653, 25306, 50612, 88571, 177142, 354284, 771833, 1543666, 3087332, 5402831, 10805662, 21611324]

約数ペア:

[(1, 21611324), (2, 10805662), (4, 5402831), (7, 3087332), (14, 1543666), (28, 771833), (61, 354284), (122, 177142), (244, 88571), (427, 50612), (854, 25306), (1708, 12653)]