21025817080

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{35543}}^1$

素因数の和:36220

約数の個数: 64

約数和(自身を含む): 49443125760

約数和(自身を除く): 28417308680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 643, 920, 1286, 2572, 3215, 5144, 6430, 12860, 14789, 25720, 29578, 35543, 59156, 71086, 73945, 118312, 142172, 147890, 177715, 284344, 295780, 355430, 591560, 710860, 817489, 1421720, 1634978, 3269956, 4087445, 6539912, 8174890, 16349780, 22854149, 32699560, 45708298, 91416596, 114270745, 182833192, 228541490, 457082980, 525645427, 914165960, 1051290854, 2102581708, 2628227135, 4205163416, 5256454270, 10512908540, 21025817080]

約数ペア:

[(1, 21025817080), (2, 10512908540), (4, 5256454270), (5, 4205163416), (8, 2628227135), (10, 2102581708), (20, 1051290854), (23, 914165960), (40, 525645427), (46, 457082980), (92, 228541490), (115, 182833192), (184, 114270745), (230, 91416596), (460, 45708298), (643, 32699560), (920, 22854149), (1286, 16349780), (2572, 8174890), (3215, 6539912), (5144, 4087445), (6430, 3269956), (12860, 1634978), (14789, 1421720), (25720, 817489), (29578, 710860), (35543, 591560), (59156, 355430), (71086, 295780), (73945, 284344), (118312, 177715), (142172, 147890)]