21447908

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{643}}^1$

素因数の和:947

約数の個数: 24

約数和(自身を含む): 38949120

約数和(自身を除く): 17501212

約数列:

[1, 2, 4, 31, 62, 124, 269, 538, 643, 1076, 1286, 2572, 8339, 16678, 19933, 33356, 39866, 79732, 172967, 345934, 691868, 5361977, 10723954, 21447908]

約数ペア:

[(1, 21447908), (2, 10723954), (4, 5361977), (31, 691868), (62, 345934), (124, 172967), (269, 79732), (538, 39866), (643, 33356), (1076, 19933), (1286, 16678), (2572, 8339)]