19388968

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 38520000

約数和(自身を除く): 19131032

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 199, 398, 641, 796, 1282, 1592, 2564, 3781, 5128, 7562, 12179, 15124, 24358, 30248, 48716, 97432, 127559, 255118, 510236, 1020472, 2423621, 4847242, 9694484, 19388968]

約数ペア:

[(1, 19388968), (2, 9694484), (4, 4847242), (8, 2423621), (19, 1020472), (38, 510236), (76, 255118), (152, 127559), (199, 97432), (398, 48716), (641, 30248), (796, 24358), (1282, 15124), (1592, 12179), (2564, 7562), (3781, 5128)]