81428396

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{4283}}^1$

素因数の和:4398

約数の個数: 36

約数和(自身を含む): 167512968

約数和(自身を除く): 86084572

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 388, 679, 1358, 2716, 4283, 4753, 8566, 9506, 17132, 19012, 29981, 59962, 119924, 209867, 415451, 419734, 830902, 839468, 1661804, 2908157, 5816314, 11632628, 20357099, 40714198, 81428396]

約数ペア:

[(1, 81428396), (2, 40714198), (4, 20357099), (7, 11632628), (14, 5816314), (28, 2908157), (49, 1661804), (97, 839468), (98, 830902), (194, 419734), (196, 415451), (388, 209867), (679, 119924), (1358, 59962), (2716, 29981), (4283, 19012), (4753, 17132), (8566, 9506)]