21869379

素因数分解:

$3^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{461}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15386301

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 251, 461, 753, 1383, 1757, 2259, 3227, 4149, 5271, 6777, 9681, 12447, 15813, 29043, 47439, 87129, 115711, 347133, 809977, 1041399, 2429931, 3124197, 7289793, 21869379]

約数ペア:

[(1, 21869379), (3, 7289793), (7, 3124197), (9, 2429931), (21, 1041399), (27, 809977), (63, 347133), (189, 115711), (251, 87129), (461, 47439), (753, 29043), (1383, 15813), (1757, 12447), (2259, 9681), (3227, 6777), (4149, 5271)]