21574557

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1777}}^1$

素因数の和:1873

約数の個数: 24

約数和(自身を含む): 33284160

約数和(自身を除く): 11709603

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 1777, 4047, 5331, 12141, 15993, 33763, 101289, 126167, 303867, 378501, 1135503, 2397173, 7191519, 21574557]

約数ペア:

[(1, 21574557), (3, 7191519), (9, 2397173), (19, 1135503), (57, 378501), (71, 303867), (171, 126167), (213, 101289), (639, 33763), (1349, 15993), (1777, 12141), (4047, 5331)]