21584985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1801}}^1$

素因数の和:1873

約数の個数: 32

約数和(自身を含む): 37366272

約数和(自身を除く): 15781287

約数列:

[1, 3, 5, 15, 17, 47, 51, 85, 141, 235, 255, 705, 799, 1801, 2397, 3995, 5403, 9005, 11985, 27015, 30617, 84647, 91851, 153085, 253941, 423235, 459255, 1269705, 1438999, 4316997, 7194995, 21584985]

約数ペア:

[(1, 21584985), (3, 7194995), (5, 4316997), (15, 1438999), (17, 1269705), (47, 459255), (51, 423235), (85, 253941), (141, 153085), (235, 91851), (255, 84647), (705, 30617), (799, 27015), (1801, 11985), (2397, 9005), (3995, 5403)]