19725760

素因数分解:

$2^6\times 5^1\times {\mathrm{61643}}^1$

素因数の和:61660

約数の個数: 28

約数和(自身を含む): 46972728

約数和(自身を除く): 27246968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 61643, 123286, 246572, 308215, 493144, 616430, 986288, 1232860, 1972576, 2465720, 3945152, 4931440, 9862880, 19725760]

約数ペア:

[(1, 19725760), (2, 9862880), (4, 4931440), (5, 3945152), (8, 2465720), (10, 1972576), (16, 1232860), (20, 986288), (32, 616430), (40, 493144), (64, 308215), (80, 246572), (160, 123286), (320, 61643)]