31661973

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 58236672

約数和(自身を除く): 26574699

約数列:

[1, 3, 7, 9, 17, 21, 37, 47, 51, 63, 111, 119, 141, 153, 259, 289, 329, 333, 357, 423, 629, 777, 799, 867, 987, 1071, 1739, 1887, 2023, 2331, 2397, 2601, 2961, 4403, 5217, 5593, 5661, 6069, 7191, 10693, 12173, 13209, 13583, 15651, 16779, 18207, 29563, 32079, 36519, 39627, 40749, 50337, 74851, 88689, 95081, 96237, 109557, 122247, 206941, 224553, 266067, 285243, 502571, 620823, 673659, 855729, 1507713, 1862469, 3517997, 4523139, 10553991, 31661973]

約数ペア:

[(1, 31661973), (3, 10553991), (7, 4523139), (9, 3517997), (17, 1862469), (21, 1507713), (37, 855729), (47, 673659), (51, 620823), (63, 502571), (111, 285243), (119, 266067), (141, 224553), (153, 206941), (259, 122247), (289, 109557), (329, 96237), (333, 95081), (357, 88689), (423, 74851), (629, 50337), (777, 40749), (799, 39627), (867, 36519), (987, 32079), (1071, 29563), (1739, 18207), (1887, 16779), (2023, 15651), (2331, 13583), (2397, 13209), (2601, 12173), (2961, 10693), (4403, 7191), (5217, 6069), (5593, 5661)]