21197697

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 9768063

約数列:

[1, 3, 23, 41, 59, 69, 123, 127, 177, 381, 943, 1357, 2419, 2829, 2921, 4071, 5207, 7257, 7493, 8763, 15621, 22479, 55637, 119761, 166911, 172339, 307213, 359283, 517017, 921639, 7065899, 21197697]

約数ペア:

[(1, 21197697), (3, 7065899), (23, 921639), (41, 517017), (59, 359283), (69, 307213), (123, 172339), (127, 166911), (177, 119761), (381, 55637), (943, 22479), (1357, 15621), (2419, 8763), (2829, 7493), (2921, 7257), (4071, 5207)]