88909220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 190512000

約数和(自身を除く): 101602780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 199, 251, 356, 398, 445, 502, 796, 890, 995, 1004, 1255, 1780, 1990, 2510, 3980, 5020, 17711, 22339, 35422, 44678, 49949, 70844, 88555, 89356, 99898, 111695, 177110, 199796, 223390, 249745, 354220, 446780, 499490, 998980, 4445461, 8890922, 17781844, 22227305, 44454610, 88909220]

約数ペア:

[(1, 88909220), (2, 44454610), (4, 22227305), (5, 17781844), (10, 8890922), (20, 4445461), (89, 998980), (178, 499490), (199, 446780), (251, 354220), (356, 249745), (398, 223390), (445, 199796), (502, 177110), (796, 111695), (890, 99898), (995, 89356), (1004, 88555), (1255, 70844), (1780, 49949), (1990, 44678), (2510, 35422), (3980, 22339), (5020, 17711)]