20595729

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 35721216

約数和(自身を除く): 15125487

約数列:

[1, 3, 7, 11, 21, 33, 47, 49, 77, 141, 147, 231, 271, 329, 517, 539, 813, 987, 1551, 1617, 1897, 2303, 2981, 3619, 5691, 6909, 8943, 10857, 12737, 13279, 20867, 25333, 38211, 39837, 62601, 75999, 89159, 140107, 146069, 267477, 420321, 438207, 624113, 980749, 1872339, 2942247, 6865243, 20595729]

約数ペア:

[(1, 20595729), (3, 6865243), (7, 2942247), (11, 1872339), (21, 980749), (33, 624113), (47, 438207), (49, 420321), (77, 267477), (141, 146069), (147, 140107), (231, 89159), (271, 75999), (329, 62601), (517, 39837), (539, 38211), (813, 25333), (987, 20867), (1551, 13279), (1617, 12737), (1897, 10857), (2303, 8943), (2981, 6909), (3619, 5691)]