21291886

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12569}}^1$

素因数の和:12600

約数の個数: 24

約数和(自身を含む): 40123440

約数和(自身を除く): 18831554

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12569, 25138, 87983, 138259, 175966, 276518, 967813, 1520849, 1935626, 3041698, 10645943, 21291886]

約数ペア:

[(1, 21291886), (2, 10645943), (7, 3041698), (11, 1935626), (14, 1520849), (22, 967813), (77, 276518), (121, 175966), (154, 138259), (242, 87983), (847, 25138), (1694, 12569)]