78171639

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 134830080

約数和(自身を除く): 56658441

約数列:

[1, 3, 7, 13, 21, 37, 39, 71, 91, 109, 111, 213, 259, 273, 327, 481, 497, 763, 777, 923, 1417, 1443, 1491, 2289, 2627, 2769, 3367, 4033, 4251, 6461, 7739, 7881, 9919, 10101, 12099, 18389, 19383, 23217, 28231, 29757, 34151, 52429, 54173, 55167, 84693, 100607, 102453, 157287, 162519, 239057, 286343, 301821, 367003, 704249, 717171, 859029, 1101009, 2004401, 2112747, 3722459, 6013203, 11167377, 26057213, 78171639]

約数ペア:

[(1, 78171639), (3, 26057213), (7, 11167377), (13, 6013203), (21, 3722459), (37, 2112747), (39, 2004401), (71, 1101009), (91, 859029), (109, 717171), (111, 704249), (213, 367003), (259, 301821), (273, 286343), (327, 239057), (481, 162519), (497, 157287), (763, 102453), (777, 100607), (923, 84693), (1417, 55167), (1443, 54173), (1491, 52429), (2289, 34151), (2627, 29757), (2769, 28231), (3367, 23217), (4033, 19383), (4251, 18389), (6461, 12099), (7739, 10101), (7881, 9919)]