20863843

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1097}}^1$

素因数の和:1147

約数の個数: 32

約数和(自身を含む): 29514240

約数和(自身を除く): 8650397

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1097, 1463, 1729, 2717, 7679, 12067, 14261, 19019, 20843, 84469, 99827, 145901, 156871, 229273, 270959, 1098097, 1604911, 1896713, 2980549, 20863843]

約数ペア:

[(1, 20863843), (7, 2980549), (11, 1896713), (13, 1604911), (19, 1098097), (77, 270959), (91, 229273), (133, 156871), (143, 145901), (209, 99827), (247, 84469), (1001, 20843), (1097, 19019), (1463, 14261), (1729, 12067), (2717, 7679)]