19911964

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{661}}^1$

素因数の和:1125

約数の個数: 24

約数和(自身を含む): 37034928

約数和(自身を除く): 17122964

約数列:

[1, 2, 4, 17, 34, 68, 443, 661, 886, 1322, 1772, 2644, 7531, 11237, 15062, 22474, 30124, 44948, 292823, 585646, 1171292, 4977991, 9955982, 19911964]

約数ペア:

[(1, 19911964), (2, 9955982), (4, 4977991), (17, 1171292), (34, 585646), (68, 292823), (443, 44948), (661, 30124), (886, 22474), (1322, 15062), (1772, 11237), (2644, 7531)]