21403217

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:448

約数の個数: 16

約数和(自身を含む): 24000192

約数和(自身を除く): 2596975

約数列:

[1, 11, 67, 113, 257, 737, 1243, 2827, 7571, 17219, 29041, 83281, 189409, 319451, 1945747, 21403217]

約数ペア:

[(1, 21403217), (11, 1945747), (67, 319451), (113, 189409), (257, 83281), (737, 29041), (1243, 17219), (2827, 7571)]