18621995

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{683}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 8956885

約数列:

[1, 5, 7, 19, 35, 41, 95, 133, 205, 287, 665, 683, 779, 1435, 3415, 3895, 4781, 5453, 12977, 23905, 27265, 28003, 64885, 90839, 140015, 196021, 454195, 532057, 980105, 2660285, 3724399, 18621995]

約数ペア:

[(1, 18621995), (5, 3724399), (7, 2660285), (19, 980105), (35, 532057), (41, 454195), (95, 196021), (133, 140015), (205, 90839), (287, 64885), (665, 28003), (683, 27265), (779, 23905), (1435, 12977), (3415, 5453), (3895, 4781)]