12393800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2046

約数の個数: 48

約数和(自身を含む): 29760000

約数和(自身を除く): 17366200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 1999, 3100, 3998, 6200, 7996, 9995, 15992, 19990, 39980, 49975, 61969, 79960, 99950, 123938, 199900, 247876, 309845, 399800, 495752, 619690, 1239380, 1549225, 2478760, 3098450, 6196900, 12393800]

約数ペア:

[(1, 12393800), (2, 6196900), (4, 3098450), (5, 2478760), (8, 1549225), (10, 1239380), (20, 619690), (25, 495752), (31, 399800), (40, 309845), (50, 247876), (62, 199900), (100, 123938), (124, 99950), (155, 79960), (200, 61969), (248, 49975), (310, 39980), (620, 19990), (775, 15992), (1240, 9995), (1550, 7996), (1999, 6200), (3100, 3998)]