21905271

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2417}}^1$

素因数の和:2495

約数の個数: 24

約数和(自身を含む): 33948720

約数和(自身を除く): 12043449

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2417, 3021, 7251, 9063, 21753, 45923, 128101, 137769, 384303, 413307, 1152909, 2433919, 7301757, 21905271]

約数ペア:

[(1, 21905271), (3, 7301757), (9, 2433919), (19, 1152909), (53, 413307), (57, 384303), (159, 137769), (171, 128101), (477, 45923), (1007, 21753), (2417, 9063), (3021, 7251)]