81313516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{27809}}^1$

素因数の和:27873

約数の個数: 24

約数和(自身を含む): 154178640

約数和(自身を除く): 72865124

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 172, 731, 1462, 2924, 27809, 55618, 111236, 472753, 945506, 1195787, 1891012, 2391574, 4783148, 20328379, 40656758, 81313516]

約数ペア:

[(1, 81313516), (2, 40656758), (4, 20328379), (17, 4783148), (34, 2391574), (43, 1891012), (68, 1195787), (86, 945506), (172, 472753), (731, 111236), (1462, 55618), (2924, 27809)]