18813784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{487}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 38649600

約数和(自身を除く): 19835816

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 439, 487, 878, 974, 1756, 1948, 3512, 3896, 4829, 5357, 9658, 10714, 19316, 21428, 38632, 42856, 213793, 427586, 855172, 1710344, 2351723, 4703446, 9406892, 18813784]

約数ペア:

[(1, 18813784), (2, 9406892), (4, 4703446), (8, 2351723), (11, 1710344), (22, 855172), (44, 427586), (88, 213793), (439, 42856), (487, 38632), (878, 21428), (974, 19316), (1756, 10714), (1948, 9658), (3512, 5357), (3896, 4829)]