19813167

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:661

約数の個数: 40

約数和(自身を含む): 33215952

約数和(自身を除く): 13402785

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 601, 891, 999, 1221, 1803, 2997, 3663, 5409, 6611, 10989, 16227, 19833, 22237, 32967, 48681, 59499, 66711, 178497, 200133, 244607, 535491, 600399, 733821, 1801197, 2201463, 6604389, 19813167]

約数ペア:

[(1, 19813167), (3, 6604389), (9, 2201463), (11, 1801197), (27, 733821), (33, 600399), (37, 535491), (81, 244607), (99, 200133), (111, 178497), (297, 66711), (333, 59499), (407, 48681), (601, 32967), (891, 22237), (999, 19833), (1221, 16227), (1803, 10989), (2997, 6611), (3663, 5409)]