21485919

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{373}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 35521024

約数和(自身を除く): 14035105

約数列:

[1, 3, 7, 13, 21, 39, 91, 211, 273, 373, 633, 1119, 1477, 2611, 2743, 4431, 4849, 7833, 8229, 14547, 19201, 33943, 57603, 78703, 101829, 236109, 550921, 1023139, 1652763, 3069417, 7161973, 21485919]

約数ペア:

[(1, 21485919), (3, 7161973), (7, 3069417), (13, 1652763), (21, 1023139), (39, 550921), (91, 236109), (211, 101829), (273, 78703), (373, 57603), (633, 33943), (1119, 19201), (1477, 14547), (2611, 8229), (2743, 7833), (4431, 4849)]