21356868

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{10531}}^1$

素因数の和:10564

約数の個数: 36

約数和(自身を含む): 53965968

約数和(自身を除く): 32609100

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 10531, 21062, 31593, 42124, 63186, 126372, 136903, 273806, 410709, 547612, 821418, 1642836, 1779739, 3559478, 5339217, 7118956, 10678434, 21356868]

約数ペア:

[(1, 21356868), (2, 10678434), (3, 7118956), (4, 5339217), (6, 3559478), (12, 1779739), (13, 1642836), (26, 821418), (39, 547612), (52, 410709), (78, 273806), (156, 136903), (169, 126372), (338, 63186), (507, 42124), (676, 31593), (1014, 21062), (2028, 10531)]