21920454

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 49201152

約数和(自身を除く): 27280698

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 127, 129, 223, 254, 258, 381, 387, 446, 669, 762, 774, 1143, 1338, 2007, 2286, 4014, 5461, 9589, 10922, 16383, 19178, 28321, 28767, 32766, 49149, 56642, 57534, 84963, 86301, 98298, 169926, 172602, 254889, 509778, 1217803, 2435606, 3653409, 7306818, 10960227, 21920454]

約数ペア:

[(1, 21920454), (2, 10960227), (3, 7306818), (6, 3653409), (9, 2435606), (18, 1217803), (43, 509778), (86, 254889), (127, 172602), (129, 169926), (223, 98298), (254, 86301), (258, 84963), (381, 57534), (387, 56642), (446, 49149), (669, 32766), (762, 28767), (774, 28321), (1143, 19178), (1338, 16383), (2007, 10922), (2286, 9589), (4014, 5461)]