19181780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{56417}}^1$

素因数の和:56443

約数の個数: 24

約数和(自身を含む): 42652008

約数和(自身を除く): 23470228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 56417, 112834, 225668, 282085, 564170, 959089, 1128340, 1918178, 3836356, 4795445, 9590890, 19181780]

約数ペア:

[(1, 19181780), (2, 9590890), (4, 4795445), (5, 3836356), (10, 1918178), (17, 1128340), (20, 959089), (34, 564170), (68, 282085), (85, 225668), (170, 112834), (340, 56417)]