21321488

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9587}}^1$

素因数の和:9734

約数の個数: 20

約数和(自身を含む): 41611920

約数和(自身を除く): 20290432

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9587, 19174, 38348, 76696, 153392, 1332593, 2665186, 5330372, 10660744, 21321488]

約数ペア:

[(1, 21321488), (2, 10660744), (4, 5330372), (8, 2665186), (16, 1332593), (139, 153392), (278, 76696), (556, 38348), (1112, 19174), (2224, 9587)]