21704835

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1811}}^1$

素因数の和:1883

約数の個数: 32

約数和(自身を含む): 37573632

約数和(自身を除く): 15868797

約数列:

[1, 3, 5, 15, 17, 47, 51, 85, 141, 235, 255, 705, 799, 1811, 2397, 3995, 5433, 9055, 11985, 27165, 30787, 85117, 92361, 153935, 255351, 425585, 461805, 1276755, 1446989, 4340967, 7234945, 21704835]

約数ペア:

[(1, 21704835), (3, 7234945), (5, 4340967), (15, 1446989), (17, 1276755), (47, 461805), (51, 425585), (85, 255351), (141, 153935), (235, 92361), (255, 85117), (705, 30787), (799, 27165), (1811, 11985), (2397, 9055), (3995, 5433)]