19418620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{74687}}^1$

素因数の和:74709

約数の個数: 24

約数和(自身を含む): 43916544

約数和(自身を除く): 24497924

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 74687, 149374, 298748, 373435, 746870, 970931, 1493740, 1941862, 3883724, 4854655, 9709310, 19418620]

約数ペア:

[(1, 19418620), (2, 9709310), (4, 4854655), (5, 3883724), (10, 1941862), (13, 1493740), (20, 970931), (26, 746870), (52, 373435), (65, 298748), (130, 149374), (260, 74687)]