81424539

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 139097088

約数和(自身を除く): 57672549

約数列:

[1, 3, 7, 9, 21, 47, 63, 107, 141, 257, 321, 329, 423, 749, 771, 963, 987, 1799, 2247, 2313, 2961, 5029, 5397, 6741, 12079, 15087, 16191, 27499, 35203, 36237, 45261, 82497, 84553, 105609, 108711, 192493, 247491, 253659, 316827, 577479, 760977, 1292453, 1732437, 3877359, 9047171, 11632077, 27141513, 81424539]

約数ペア:

[(1, 81424539), (3, 27141513), (7, 11632077), (9, 9047171), (21, 3877359), (47, 1732437), (63, 1292453), (107, 760977), (141, 577479), (257, 316827), (321, 253659), (329, 247491), (423, 192493), (749, 108711), (771, 105609), (963, 84553), (987, 82497), (1799, 45261), (2247, 36237), (2313, 35203), (2961, 27499), (5029, 16191), (5397, 15087), (6741, 12079)]