18451780

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1879}}^1$

素因数の和:2379

約数の個数: 24

約数和(自身を含む): 38848320

約数和(自身を除く): 20396540

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1879, 1964, 2455, 3758, 4910, 7516, 9395, 9820, 18790, 37580, 922589, 1845178, 3690356, 4612945, 9225890, 18451780]

約数ペア:

[(1, 18451780), (2, 9225890), (4, 4612945), (5, 3690356), (10, 1845178), (20, 922589), (491, 37580), (982, 18790), (1879, 9820), (1964, 9395), (2455, 7516), (3758, 4910)]