21857209

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:756

約数の個数: 16

約数和(自身を含む): 24754176

約数和(自身を除く): 2896967

約数列:

[1, 11, 47, 67, 517, 631, 737, 3149, 6941, 29657, 34639, 42277, 326227, 465047, 1987019, 21857209]

約数ペア:

[(1, 21857209), (11, 1987019), (47, 465047), (67, 326227), (517, 42277), (631, 34639), (737, 29657), (3149, 6941)]