28890160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27779}}^1$

素因数の和:27805

約数の個数: 40

約数和(自身を含む): 72339120

約数和(自身を除く): 43448960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27779, 55558, 111116, 138895, 222232, 277790, 361127, 444464, 555580, 722254, 1111160, 1444508, 1805635, 2222320, 2889016, 3611270, 5778032, 7222540, 14445080, 28890160]

約数ペア:

[(1, 28890160), (2, 14445080), (4, 7222540), (5, 5778032), (8, 3611270), (10, 2889016), (13, 2222320), (16, 1805635), (20, 1444508), (26, 1111160), (40, 722254), (52, 555580), (65, 444464), (80, 361127), (104, 277790), (130, 222232), (208, 138895), (260, 111116), (520, 55558), (1040, 27779)]