18994040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36527}}^1$

素因数の和:36551

約数の個数: 32

約数和(自身を含む): 46025280

約数和(自身を除く): 27031240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 36527, 73054, 146108, 182635, 292216, 365270, 474851, 730540, 949702, 1461080, 1899404, 2374255, 3798808, 4748510, 9497020, 18994040]

約数ペア:

[(1, 18994040), (2, 9497020), (4, 4748510), (5, 3798808), (8, 2374255), (10, 1899404), (13, 1461080), (20, 949702), (26, 730540), (40, 474851), (52, 365270), (65, 292216), (104, 182635), (130, 146108), (260, 73054), (520, 36527)]