20216553

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{56629}}^1$

素因数の和:56656

約数の個数: 16

約数和(自身を含む): 32618880

約数和(自身を除く): 12402327

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 56629, 169887, 396403, 962693, 1189209, 2888079, 6738851, 20216553]

約数ペア:

[(1, 20216553), (3, 6738851), (7, 2888079), (17, 1189209), (21, 962693), (51, 396403), (119, 169887), (357, 56629)]