8640709

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:106

約数の個数: 48

約数和(自身を含む): 12410496

約数和(自身を除く): 3769787

約数列:

[1, 7, 11, 17, 23, 41, 49, 77, 119, 161, 187, 253, 287, 391, 451, 539, 697, 833, 943, 1127, 1309, 1771, 2009, 2737, 3157, 4301, 4879, 6601, 7667, 9163, 10373, 12397, 16031, 19159, 22099, 30107, 34153, 46207, 53669, 72611, 112217, 176341, 210749, 375683, 508277, 785519, 1234387, 8640709]

約数ペア:

[(1, 8640709), (7, 1234387), (11, 785519), (17, 508277), (23, 375683), (41, 210749), (49, 176341), (77, 112217), (119, 72611), (161, 53669), (187, 46207), (253, 34153), (287, 30107), (391, 22099), (451, 19159), (539, 16031), (697, 12397), (833, 10373), (943, 9163), (1127, 7667), (1309, 6601), (1771, 4879), (2009, 4301), (2737, 3157)]