18881680

素因数分解:

$2^4\times 5^1\times {\mathrm{236021}}^1$

素因数の和:236034

約数の個数: 20

約数和(自身を含む): 43900092

約数和(自身を除く): 25018412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236021, 472042, 944084, 1180105, 1888168, 2360210, 3776336, 4720420, 9440840, 18881680]

約数ペア:

[(1, 18881680), (2, 9440840), (4, 4720420), (5, 3776336), (8, 2360210), (10, 1888168), (16, 1180105), (20, 944084), (40, 472042), (80, 236021)]