20747055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 20310225

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 59, 85, 105, 119, 177, 197, 255, 295, 357, 413, 591, 595, 885, 985, 1003, 1239, 1379, 1785, 2065, 2955, 3009, 3349, 4137, 5015, 6195, 6895, 7021, 10047, 11623, 15045, 16745, 20685, 21063, 23443, 34869, 35105, 50235, 58115, 70329, 81361, 105315, 117215, 174345, 197591, 244083, 351645, 406805, 592773, 987955, 1220415, 1383137, 2963865, 4149411, 6915685, 20747055]

約数ペア:

[(1, 20747055), (3, 6915685), (5, 4149411), (7, 2963865), (15, 1383137), (17, 1220415), (21, 987955), (35, 592773), (51, 406805), (59, 351645), (85, 244083), (105, 197591), (119, 174345), (177, 117215), (197, 105315), (255, 81361), (295, 70329), (357, 58115), (413, 50235), (591, 35105), (595, 34869), (885, 23443), (985, 21063), (1003, 20685), (1239, 16745), (1379, 15045), (1785, 11623), (2065, 10047), (2955, 7021), (3009, 6895), (3349, 6195), (4137, 5015)]