21870760

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2833}}^1$

素因数の和:3037

約数の個数: 32

約数和(自身を含む): 49481640

約数和(自身を除く): 27610880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2833, 3860, 5666, 7720, 11332, 14165, 22664, 28330, 56660, 113320, 546769, 1093538, 2187076, 2733845, 4374152, 5467690, 10935380, 21870760]

約数ペア:

[(1, 21870760), (2, 10935380), (4, 5467690), (5, 4374152), (8, 2733845), (10, 2187076), (20, 1093538), (40, 546769), (193, 113320), (386, 56660), (772, 28330), (965, 22664), (1544, 14165), (1930, 11332), (2833, 7720), (3860, 5666)]