21381886

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{2447}}^1$

素因数の和:2723

約数の個数: 16

約数和(自身を含む): 34105536

約数和(自身を除く): 12723650

約数列:

[1, 2, 17, 34, 257, 514, 2447, 4369, 4894, 8738, 41599, 83198, 628879, 1257758, 10690943, 21381886]

約数ペア:

[(1, 21381886), (2, 10690943), (17, 1257758), (34, 628879), (257, 83198), (514, 41599), (2447, 8738), (4369, 4894)]