21040076

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:569

約数の個数: 24

約数和(自身を含む): 37521456

約数和(自身を除く): 16481380

約数列:

[1, 2, 4, 97, 194, 211, 257, 388, 422, 514, 844, 1028, 20467, 24929, 40934, 49858, 54227, 81868, 99716, 108454, 216908, 5260019, 10520038, 21040076]

約数ペア:

[(1, 21040076), (2, 10520038), (4, 5260019), (97, 216908), (194, 108454), (211, 99716), (257, 81868), (388, 54227), (422, 49858), (514, 40934), (844, 24929), (1028, 20467)]