19865020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3019}}^1$

素因数の和:3082

約数の個数: 48

約数和(自身を含む): 48706560

約数和(自身を除く): 28841540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3019, 3290, 6038, 6580, 12076, 15095, 21133, 30190, 42266, 60380, 84532, 105665, 141893, 211330, 283786, 422660, 567572, 709465, 993251, 1418930, 1986502, 2837860, 3973004, 4966255, 9932510, 19865020]

約数ペア:

[(1, 19865020), (2, 9932510), (4, 4966255), (5, 3973004), (7, 2837860), (10, 1986502), (14, 1418930), (20, 993251), (28, 709465), (35, 567572), (47, 422660), (70, 283786), (94, 211330), (140, 141893), (188, 105665), (235, 84532), (329, 60380), (470, 42266), (658, 30190), (940, 21133), (1316, 15095), (1645, 12076), (3019, 6580), (3290, 6038)]