20349

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:49

約数の個数: 24

約数和(自身を含む): 37440

約数和(自身を除く): 17091

約数列:

[1, 3, 7, 9, 17, 19, 21, 51, 57, 63, 119, 133, 153, 171, 323, 357, 399, 969, 1071, 1197, 2261, 2907, 6783, 20349]

約数ペア:

[(1, 20349), (3, 6783), (7, 2907), (9, 2261), (17, 1197), (19, 1071), (21, 969), (51, 399), (57, 357), (63, 323), (119, 171), (133, 153)]