280804840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{189733}}^1$

素因数の和:189781

約数の個数: 32

約数和(自身を含む): 648890280

約数和(自身を除く): 368085440

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 189733, 379466, 758932, 948665, 1517864, 1897330, 3794660, 7020121, 7589320, 14040242, 28080484, 35100605, 56160968, 70201210, 140402420, 280804840]

約数ペア:

[(1, 280804840), (2, 140402420), (4, 70201210), (5, 56160968), (8, 35100605), (10, 28080484), (20, 14040242), (37, 7589320), (40, 7020121), (74, 3794660), (148, 1897330), (185, 1517864), (296, 948665), (370, 758932), (740, 379466), (1480, 189733)]