123091450

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 234360000

約数和(自身を除く): 111268550

約数列:

[1, 2, 5, 10, 25, 50, 89, 139, 178, 199, 278, 398, 445, 695, 890, 995, 1390, 1990, 2225, 3475, 4450, 4975, 6950, 9950, 12371, 17711, 24742, 27661, 35422, 55322, 61855, 88555, 123710, 138305, 177110, 276610, 309275, 442775, 618550, 691525, 885550, 1383050, 2461829, 4923658, 12309145, 24618290, 61545725, 123091450]

約数ペア:

[(1, 123091450), (2, 61545725), (5, 24618290), (10, 12309145), (25, 4923658), (50, 2461829), (89, 1383050), (139, 885550), (178, 691525), (199, 618550), (278, 442775), (398, 309275), (445, 276610), (695, 177110), (890, 138305), (995, 123710), (1390, 88555), (1990, 61855), (2225, 55322), (3475, 35422), (4450, 27661), (4975, 24742), (6950, 17711), (9950, 12371)]