21783886

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{8171}}^1$

素因数の和:8247

約数の個数: 16

約数和(自身を含む): 34518528

約数和(自身を除く): 12734642

約数列:

[1, 2, 31, 43, 62, 86, 1333, 2666, 8171, 16342, 253301, 351353, 506602, 702706, 10891943, 21783886]

約数ペア:

[(1, 21783886), (2, 10891943), (31, 702706), (43, 506602), (62, 351353), (86, 253301), (1333, 16342), (2666, 8171)]