55612540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 119448000

約数和(自身を除く): 63835460

約数列:

[1, 2, 4, 5, 10, 20, 89, 157, 178, 199, 314, 356, 398, 445, 628, 785, 796, 890, 995, 1570, 1780, 1990, 3140, 3980, 13973, 17711, 27946, 31243, 35422, 55892, 62486, 69865, 70844, 88555, 124972, 139730, 156215, 177110, 279460, 312430, 354220, 624860, 2780627, 5561254, 11122508, 13903135, 27806270, 55612540]

約数ペア:

[(1, 55612540), (2, 27806270), (4, 13903135), (5, 11122508), (10, 5561254), (20, 2780627), (89, 624860), (157, 354220), (178, 312430), (199, 279460), (314, 177110), (356, 156215), (398, 139730), (445, 124972), (628, 88555), (785, 70844), (796, 69865), (890, 62486), (995, 55892), (1570, 35422), (1780, 31243), (1990, 27946), (3140, 17711), (3980, 13973)]