21254618

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12547}}^1$

素因数の和:12578

約数の個数: 24

約数和(自身を含む): 40053216

約数和(自身を除く): 18798598

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12547, 25094, 87829, 138017, 175658, 276034, 966119, 1518187, 1932238, 3036374, 10627309, 21254618]

約数ペア:

[(1, 21254618), (2, 10627309), (7, 3036374), (11, 1932238), (14, 1518187), (22, 966119), (77, 276034), (121, 175658), (154, 138017), (242, 87829), (847, 25094), (1694, 12547)]