21908680

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6599}}^1$

素因数の和:6693

約数の個数: 32

約数和(自身を含む): 49896000

約数和(自身を除く): 27987320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6599, 13198, 26396, 32995, 52792, 65990, 131980, 263960, 547717, 1095434, 2190868, 2738585, 4381736, 5477170, 10954340, 21908680]

約数ペア:

[(1, 21908680), (2, 10954340), (4, 5477170), (5, 4381736), (8, 2738585), (10, 2190868), (20, 1095434), (40, 547717), (83, 263960), (166, 131980), (332, 65990), (415, 52792), (664, 32995), (830, 26396), (1660, 13198), (3320, 6599)]