81895905

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2857}}^1$

素因数の和:2895

約数の個数: 72

約数和(自身を含む): 177893352

約数和(自身を除く): 95997447

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 49, 63, 65, 91, 105, 117, 147, 195, 245, 273, 315, 441, 455, 585, 637, 735, 819, 1365, 1911, 2205, 2857, 3185, 4095, 5733, 8571, 9555, 14285, 19999, 25713, 28665, 37141, 42855, 59997, 99995, 111423, 128565, 139993, 179991, 185705, 259987, 299985, 334269, 419979, 557115, 699965, 779961, 899955, 1259937, 1299935, 1671345, 1819909, 2099895, 2339883, 3899805, 5459727, 6299685, 9099545, 11699415, 16379181, 27298635, 81895905]

約数ペア:

[(1, 81895905), (3, 27298635), (5, 16379181), (7, 11699415), (9, 9099545), (13, 6299685), (15, 5459727), (21, 3899805), (35, 2339883), (39, 2099895), (45, 1819909), (49, 1671345), (63, 1299935), (65, 1259937), (91, 899955), (105, 779961), (117, 699965), (147, 557115), (195, 419979), (245, 334269), (273, 299985), (315, 259987), (441, 185705), (455, 179991), (585, 139993), (637, 128565), (735, 111423), (819, 99995), (1365, 59997), (1911, 42855), (2205, 37141), (2857, 28665), (3185, 25713), (4095, 19999), (5733, 14285), (8571, 9555)]