156919460

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{443}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 335664000

約数和(自身を除く): 178744540

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 199, 356, 398, 443, 445, 796, 886, 890, 995, 1772, 1780, 1990, 2215, 3980, 4430, 8860, 17711, 35422, 39427, 70844, 78854, 88157, 88555, 157708, 176314, 177110, 197135, 352628, 354220, 394270, 440785, 788540, 881570, 1763140, 7845973, 15691946, 31383892, 39229865, 78459730, 156919460]

約数ペア:

[(1, 156919460), (2, 78459730), (4, 39229865), (5, 31383892), (10, 15691946), (20, 7845973), (89, 1763140), (178, 881570), (199, 788540), (356, 440785), (398, 394270), (443, 354220), (445, 352628), (796, 197135), (886, 177110), (890, 176314), (995, 157708), (1772, 88555), (1780, 88157), (1990, 78854), (2215, 70844), (3980, 39427), (4430, 35422), (8860, 17711)]