18622420

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4679}}^1$

素因数の和:4887

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 20689580

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4679, 9358, 18716, 23395, 46790, 93580, 931121, 1862242, 3724484, 4655605, 9311210, 18622420]

約数ペア:

[(1, 18622420), (2, 9311210), (4, 4655605), (5, 3724484), (10, 1862242), (20, 931121), (199, 93580), (398, 46790), (796, 23395), (995, 18716), (1990, 9358), (3980, 4679)]