77981981

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 99727200

約数和(自身を除く): 21745219

約数列:

[1, 7, 11, 49, 77, 149, 539, 971, 1043, 1639, 6797, 7301, 10681, 11473, 47579, 74767, 80311, 144679, 523369, 1012753, 1591469, 7089271, 11140283, 77981981]

約数ペア:

[(1, 77981981), (7, 11140283), (11, 7089271), (49, 1591469), (77, 1012753), (149, 523369), (539, 144679), (971, 80311), (1043, 74767), (1639, 47579), (6797, 11473), (7301, 10681)]