87518431

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 128701440

約数和(自身を除く): 41183009

約数列:

[1, 7, 11, 13, 17, 37, 77, 91, 119, 139, 143, 187, 221, 259, 407, 481, 629, 973, 1001, 1309, 1529, 1547, 1807, 2363, 2431, 2849, 3367, 4403, 5143, 5291, 6919, 8177, 10703, 12649, 16541, 17017, 19877, 25993, 30719, 36001, 37037, 48433, 56573, 57239, 66859, 87431, 89947, 139139, 181951, 215033, 337909, 396011, 468013, 612017, 629629, 735449, 961741, 1136603, 2365363, 5148143, 6732187, 7956221, 12502633, 87518431]

約数ペア:

[(1, 87518431), (7, 12502633), (11, 7956221), (13, 6732187), (17, 5148143), (37, 2365363), (77, 1136603), (91, 961741), (119, 735449), (139, 629629), (143, 612017), (187, 468013), (221, 396011), (259, 337909), (407, 215033), (481, 181951), (629, 139139), (973, 89947), (1001, 87431), (1309, 66859), (1529, 57239), (1547, 56573), (1807, 48433), (2363, 37037), (2431, 36001), (2849, 30719), (3367, 25993), (4403, 19877), (5143, 17017), (5291, 16541), (6919, 12649), (8177, 10703)]