648045490

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{3659}}^1$

素因数の和:3954

約数の個数: 32

約数和(自身を含む): 1185840000

約数和(自身を除く): 537794510

約数列:

[1, 2, 5, 10, 89, 178, 199, 398, 445, 890, 995, 1990, 3659, 7318, 17711, 18295, 35422, 36590, 88555, 177110, 325651, 651302, 728141, 1456282, 1628255, 3256510, 3640705, 7281410, 64804549, 129609098, 324022745, 648045490]

約数ペア:

[(1, 648045490), (2, 324022745), (5, 129609098), (10, 64804549), (89, 7281410), (178, 3640705), (199, 3256510), (398, 1628255), (445, 1456282), (890, 728141), (995, 651302), (1990, 325651), (3659, 177110), (7318, 88555), (17711, 36590), (18295, 35422)]