11886980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 28740096

約数和(自身を除く): 16853116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 431, 788, 862, 985, 1379, 1724, 1970, 2155, 2758, 3017, 3940, 4310, 5516, 6034, 6895, 8620, 12068, 13790, 15085, 27580, 30170, 60340, 84907, 169814, 339628, 424535, 594349, 849070, 1188698, 1698140, 2377396, 2971745, 5943490, 11886980]

約数ペア:

[(1, 11886980), (2, 5943490), (4, 2971745), (5, 2377396), (7, 1698140), (10, 1188698), (14, 849070), (20, 594349), (28, 424535), (35, 339628), (70, 169814), (140, 84907), (197, 60340), (394, 30170), (431, 27580), (788, 15085), (862, 13790), (985, 12068), (1379, 8620), (1724, 6895), (1970, 6034), (2155, 5516), (2758, 4310), (3017, 3940)]