12938220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71879}}^1$

素因数の和:71894

約数の個数: 36

約数和(自身を含む): 39246480

約数和(自身を除く): 26308260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 71879, 143758, 215637, 287516, 359395, 431274, 646911, 718790, 862548, 1078185, 1293822, 1437580, 2156370, 2587644, 3234555, 4312740, 6469110, 12938220]

約数ペア:

[(1, 12938220), (2, 6469110), (3, 4312740), (4, 3234555), (5, 2587644), (6, 2156370), (9, 1437580), (10, 1293822), (12, 1078185), (15, 862548), (18, 718790), (20, 646911), (30, 431274), (36, 359395), (45, 287516), (60, 215637), (90, 143758), (180, 71879)]