12731440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3701}}^1$

素因数の和:3757

約数の個数: 40

約数和(自身を含む): 30297168

約数和(自身を除く): 17565728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 3701, 7402, 14804, 18505, 29608, 37010, 59216, 74020, 148040, 159143, 296080, 318286, 636572, 795715, 1273144, 1591430, 2546288, 3182860, 6365720, 12731440]

約数ペア:

[(1, 12731440), (2, 6365720), (4, 3182860), (5, 2546288), (8, 1591430), (10, 1273144), (16, 795715), (20, 636572), (40, 318286), (43, 296080), (80, 159143), (86, 148040), (172, 74020), (215, 59216), (344, 37010), (430, 29608), (688, 18505), (860, 14804), (1720, 7402), (3440, 3701)]