13440080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3907}}^1$

素因数の和:3963

約数の個数: 40

約数和(自身を含む): 31983072

約数和(自身を除く): 18542992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 3907, 7814, 15628, 19535, 31256, 39070, 62512, 78140, 156280, 168001, 312560, 336002, 672004, 840005, 1344008, 1680010, 2688016, 3360020, 6720040, 13440080]

約数ペア:

[(1, 13440080), (2, 6720040), (4, 3360020), (5, 2688016), (8, 1680010), (10, 1344008), (16, 840005), (20, 672004), (40, 336002), (43, 312560), (80, 168001), (86, 156280), (172, 78140), (215, 62512), (344, 39070), (430, 31256), (688, 19535), (860, 15628), (1720, 7814), (3440, 3907)]