218059640

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{5501}}^1$

素因数の和:6503

約数の個数: 32

約数和(自身を含む): 491218560

約数和(自身を除く): 273158920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 3964, 4955, 5501, 7928, 9910, 11002, 19820, 22004, 27505, 39640, 44008, 55010, 110020, 220040, 5451491, 10902982, 21805964, 27257455, 43611928, 54514910, 109029820, 218059640]

約数ペア:

[(1, 218059640), (2, 109029820), (4, 54514910), (5, 43611928), (8, 27257455), (10, 21805964), (20, 10902982), (40, 5451491), (991, 220040), (1982, 110020), (3964, 55010), (4955, 44008), (5501, 39640), (7928, 27505), (9910, 22004), (11002, 19820)]