18081710725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1\times {\mathrm{1559}}^1$

素因数の和:1990

約数の個数: 48

約数和(自身を含む): 24438435840

約数和(自身を除く): 6356725115

約数列:

[1, 5, 13, 25, 65, 127, 281, 325, 635, 1405, 1559, 1651, 3175, 3653, 7025, 7795, 8255, 18265, 20267, 35687, 38975, 41275, 91325, 101335, 178435, 197993, 438079, 463931, 506675, 892175, 989965, 2190395, 2319655, 2573909, 4949825, 5695027, 10951975, 11598275, 12869545, 28475135, 55636033, 64347725, 142375675, 278180165, 723268429, 1390900825, 3616342145, 18081710725]

約数ペア:

[(1, 18081710725), (5, 3616342145), (13, 1390900825), (25, 723268429), (65, 278180165), (127, 142375675), (281, 64347725), (325, 55636033), (635, 28475135), (1405, 12869545), (1559, 11598275), (1651, 10951975), (3175, 5695027), (3653, 4949825), (7025, 2573909), (7795, 2319655), (8255, 2190395), (18265, 989965), (20267, 892175), (35687, 506675), (38975, 463931), (41275, 438079), (91325, 197993), (101335, 178435)]