78810081

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 134400000

約数和(自身を除く): 55589919

約数列:

[1, 3, 7, 19, 21, 29, 49, 57, 87, 133, 139, 147, 203, 343, 399, 417, 551, 609, 931, 973, 1029, 1421, 1653, 2641, 2793, 2919, 3857, 4031, 4263, 6517, 6811, 7923, 9947, 11571, 12093, 18487, 19551, 20433, 26999, 28217, 29841, 47677, 55461, 76589, 80997, 84651, 129409, 143031, 188993, 197519, 229767, 388227, 536123, 566979, 592557, 905863, 1382633, 1608369, 2717589, 3752861, 4147899, 11258583, 26270027, 78810081]

約数ペア:

[(1, 78810081), (3, 26270027), (7, 11258583), (19, 4147899), (21, 3752861), (29, 2717589), (49, 1608369), (57, 1382633), (87, 905863), (133, 592557), (139, 566979), (147, 536123), (203, 388227), (343, 229767), (399, 197519), (417, 188993), (551, 143031), (609, 129409), (931, 84651), (973, 80997), (1029, 76589), (1421, 55461), (1653, 47677), (2641, 29841), (2793, 28217), (2919, 26999), (3857, 20433), (4031, 19551), (4263, 18487), (6517, 12093), (6811, 11571), (7923, 9947)]