21567978

素因数分解:

$2^1\times 3^3\times {\mathrm{307}}^1\times {\mathrm{1301}}^1$

素因数の和:1619

約数の個数: 32

約数和(自身を含む): 48121920

約数和(自身を除く): 26553942

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 307, 614, 921, 1301, 1842, 2602, 2763, 3903, 5526, 7806, 8289, 11709, 16578, 23418, 35127, 70254, 399407, 798814, 1198221, 2396442, 3594663, 7189326, 10783989, 21567978]

約数ペア:

[(1, 21567978), (2, 10783989), (3, 7189326), (6, 3594663), (9, 2396442), (18, 1198221), (27, 798814), (54, 399407), (307, 70254), (614, 35127), (921, 23418), (1301, 16578), (1842, 11709), (2602, 8289), (2763, 7806), (3903, 5526)]