207821169

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 328333824

約数和(自身を除く): 120512655

約数列:

[1, 3, 9, 23, 41, 47, 69, 123, 141, 207, 369, 423, 521, 943, 1081, 1563, 1927, 2829, 3243, 4689, 5781, 8487, 9729, 11983, 17343, 21361, 24487, 35949, 44321, 64083, 73461, 107847, 132963, 192249, 220383, 398889, 491303, 563201, 1003967, 1473909, 1689603, 3011901, 4421727, 5068809, 9035703, 23091241, 69273723, 207821169]

約数ペア:

[(1, 207821169), (3, 69273723), (9, 23091241), (23, 9035703), (41, 5068809), (47, 4421727), (69, 3011901), (123, 1689603), (141, 1473909), (207, 1003967), (369, 563201), (423, 491303), (521, 398889), (943, 220383), (1081, 192249), (1563, 132963), (1927, 107847), (2829, 73461), (3243, 64083), (4689, 44321), (5781, 35949), (8487, 24487), (9729, 21361), (11983, 17343)]