21965744

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25903}}^1$

素因数の和:25964

約数の個数: 20

約数和(自身を含む): 43363296

約数和(自身を除く): 21397552

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25903, 51806, 103612, 207224, 414448, 1372859, 2745718, 5491436, 10982872, 21965744]

約数ペア:

[(1, 21965744), (2, 10982872), (4, 5491436), (8, 2745718), (16, 1372859), (53, 414448), (106, 207224), (212, 103612), (424, 51806), (848, 25903)]