18917168

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{10847}}^1$

素因数の和:10964

約数の個数: 20

約数和(自身を含む): 36991680

約数和(自身を除く): 18074512

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 10847, 21694, 43388, 86776, 173552, 1182323, 2364646, 4729292, 9458584, 18917168]

約数ペア:

[(1, 18917168), (2, 9458584), (4, 4729292), (8, 2364646), (16, 1182323), (109, 173552), (218, 86776), (436, 43388), (872, 21694), (1744, 10847)]