18949959

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{313}}^1$

素因数の和:388

約数の個数: 36

約数和(自身を含む): 32427408

約数和(自身を除く): 13477449

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 313, 651, 939, 961, 1953, 2191, 2817, 2883, 6573, 6727, 8649, 9703, 19719, 20181, 29109, 60543, 67921, 87327, 203763, 300793, 611289, 902379, 2105551, 2707137, 6316653, 18949959]

約数ペア:

[(1, 18949959), (3, 6316653), (7, 2707137), (9, 2105551), (21, 902379), (31, 611289), (63, 300793), (93, 203763), (217, 87327), (279, 67921), (313, 60543), (651, 29109), (939, 20181), (961, 19719), (1953, 9703), (2191, 8649), (2817, 6727), (2883, 6573)]