21172276

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{503}}^1\times {\mathrm{619}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 18200204

約数列:

[1, 2, 4, 17, 34, 68, 503, 619, 1006, 1238, 2012, 2476, 8551, 10523, 17102, 21046, 34204, 42092, 311357, 622714, 1245428, 5293069, 10586138, 21172276]

約数ペア:

[(1, 21172276), (2, 10586138), (4, 5293069), (17, 1245428), (34, 622714), (68, 311357), (503, 42092), (619, 34204), (1006, 21046), (1238, 17102), (2012, 10523), (2476, 8551)]