68020720

素因数分解:

$2^4\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1051}}^1$

素因数の和:1873

約数の個数: 40

約数和(自身を含む): 158494320

約数和(自身を除く): 90473600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809, 1051, 1618, 2102, 3236, 4045, 4204, 5255, 6472, 8090, 8408, 10510, 12944, 16180, 16816, 21020, 32360, 42040, 64720, 84080, 850259, 1700518, 3401036, 4251295, 6802072, 8502590, 13604144, 17005180, 34010360, 68020720]

約数ペア:

[(1, 68020720), (2, 34010360), (4, 17005180), (5, 13604144), (8, 8502590), (10, 6802072), (16, 4251295), (20, 3401036), (40, 1700518), (80, 850259), (809, 84080), (1051, 64720), (1618, 42040), (2102, 32360), (3236, 21020), (4045, 16816), (4204, 16180), (5255, 12944), (6472, 10510), (8090, 8408)]