18990488

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{215801}}^1$

素因数の和:215818

約数の個数: 16

約数和(自身を含む): 38844360

約数和(自身を除く): 19853872

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 215801, 431602, 863204, 1726408, 2373811, 4747622, 9495244, 18990488]

約数ペア:

[(1, 18990488), (2, 9495244), (4, 4747622), (8, 2373811), (11, 1726408), (22, 863204), (44, 431602), (88, 215801)]