21136423

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 7299545

約数列:

[1, 7, 11, 17, 67, 77, 119, 187, 241, 469, 737, 1139, 1309, 1687, 2651, 4097, 5159, 7973, 12529, 16147, 18557, 28679, 45067, 87703, 113029, 177617, 274499, 315469, 1243319, 1921493, 3019489, 21136423]

約数ペア:

[(1, 21136423), (7, 3019489), (11, 1921493), (17, 1243319), (67, 315469), (77, 274499), (119, 177617), (187, 113029), (241, 87703), (469, 45067), (737, 28679), (1139, 18557), (1309, 16147), (1687, 12529), (2651, 7973), (4097, 5159)]