21954452

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:768

約数の個数: 36

約数和(自身を含む): 42549696

約数和(自身を除く): 20595244

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 169, 188, 338, 611, 676, 691, 1222, 1382, 2444, 2764, 7943, 8983, 15886, 17966, 31772, 32477, 35932, 64954, 116779, 129908, 233558, 422201, 467116, 844402, 1688804, 5488613, 10977226, 21954452]

約数ペア:

[(1, 21954452), (2, 10977226), (4, 5488613), (13, 1688804), (26, 844402), (47, 467116), (52, 422201), (94, 233558), (169, 129908), (188, 116779), (338, 64954), (611, 35932), (676, 32477), (691, 31772), (1222, 17966), (1382, 15886), (2444, 8983), (2764, 7943)]