39400040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22907}}^1$

素因数の和:22961

約数の個数: 32

約数和(自身を含む): 90715680

約数和(自身を除く): 51315640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 22907, 45814, 91628, 114535, 183256, 229070, 458140, 916280, 985001, 1970002, 3940004, 4925005, 7880008, 9850010, 19700020, 39400040]

約数ペア:

[(1, 39400040), (2, 19700020), (4, 9850010), (5, 7880008), (8, 4925005), (10, 3940004), (20, 1970002), (40, 985001), (43, 916280), (86, 458140), (172, 229070), (215, 183256), (344, 114535), (430, 91628), (860, 45814), (1720, 22907)]