20407926

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 51388416

約数和(自身を除く): 30980490

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 163, 231, 271, 326, 462, 489, 542, 813, 978, 1141, 1626, 1793, 1897, 2282, 2981, 3423, 3586, 3794, 5379, 5691, 5962, 6846, 8943, 10758, 11382, 12551, 17886, 20867, 25102, 37653, 41734, 44173, 62601, 75306, 88346, 125202, 132519, 265038, 309211, 485903, 618422, 927633, 971806, 1457709, 1855266, 2915418, 3401321, 6802642, 10203963, 20407926]

約数ペア:

[(1, 20407926), (2, 10203963), (3, 6802642), (6, 3401321), (7, 2915418), (11, 1855266), (14, 1457709), (21, 971806), (22, 927633), (33, 618422), (42, 485903), (66, 309211), (77, 265038), (154, 132519), (163, 125202), (231, 88346), (271, 75306), (326, 62601), (462, 44173), (489, 41734), (542, 37653), (813, 25102), (978, 20867), (1141, 17886), (1626, 12551), (1793, 11382), (1897, 10758), (2282, 8943), (2981, 6846), (3423, 5962), (3586, 5691), (3794, 5379)]