21335237

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1721}}^1$

素因数の和:1769

約数の個数: 24

約数和(自身を含む): 28268352

約数和(自身を除く): 6933115

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1721, 1771, 12047, 12397, 18931, 39583, 84329, 132517, 277081, 435413, 927619, 1939567, 3047891, 21335237]

約数ペア:

[(1, 21335237), (7, 3047891), (11, 1939567), (23, 927619), (49, 435413), (77, 277081), (161, 132517), (253, 84329), (539, 39583), (1127, 18931), (1721, 12397), (1771, 12047)]