21681348

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{10691}}^1$

素因数の和:10724

約数の個数: 36

約数和(自身を含む): 54785808

約数和(自身を除く): 33104460

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 10691, 21382, 32073, 42764, 64146, 128292, 138983, 277966, 416949, 555932, 833898, 1667796, 1806779, 3613558, 5420337, 7227116, 10840674, 21681348]

約数ペア:

[(1, 21681348), (2, 10840674), (3, 7227116), (4, 5420337), (6, 3613558), (12, 1806779), (13, 1667796), (26, 833898), (39, 555932), (52, 416949), (78, 277966), (156, 138983), (169, 128292), (338, 64146), (507, 42764), (676, 32073), (1014, 21382), (2028, 10691)]