18720856

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30391}}^1$

素因数の和:30415

約数の個数: 32

約数和(自身を含む): 43764480

約数和(自身を除く): 25043624

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 308, 616, 30391, 60782, 121564, 212737, 243128, 334301, 425474, 668602, 850948, 1337204, 1701896, 2340107, 2674408, 4680214, 9360428, 18720856]

約数ペア:

[(1, 18720856), (2, 9360428), (4, 4680214), (7, 2674408), (8, 2340107), (11, 1701896), (14, 1337204), (22, 850948), (28, 668602), (44, 425474), (56, 334301), (77, 243128), (88, 212737), (154, 121564), (308, 60782), (616, 30391)]