7881451991

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{1423}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 9964183680

約数和(自身を除く): 2082731689

約数列:

[1, 7, 17, 49, 61, 109, 119, 427, 763, 833, 1037, 1423, 1853, 2989, 5341, 6649, 7259, 9961, 12971, 24191, 46543, 50813, 69727, 86803, 90797, 113033, 155107, 169337, 325801, 607621, 791231, 1085749, 1185359, 1475651, 2636819, 4253347, 5538617, 7600243, 9461527, 10329557, 18457733, 66230689, 72306899, 129204131, 160845959, 463614823, 1125921713, 7881451991]

約数ペア:

[(1, 7881451991), (7, 1125921713), (17, 463614823), (49, 160845959), (61, 129204131), (109, 72306899), (119, 66230689), (427, 18457733), (763, 10329557), (833, 9461527), (1037, 7600243), (1423, 5538617), (1853, 4253347), (2989, 2636819), (5341, 1475651), (6649, 1185359), (7259, 1085749), (9961, 791231), (12971, 607621), (24191, 325801), (46543, 169337), (50813, 155107), (69727, 113033), (86803, 90797)]