21312718

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{4217}}^1$

素因数の和:4264

約数の個数: 24

約数和(自身を含む): 38569392

約数和(自身を除く): 17256674

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 361, 722, 2527, 4217, 5054, 8434, 29519, 59038, 80123, 160246, 560861, 1121722, 1522337, 3044674, 10656359, 21312718]

約数ペア:

[(1, 21312718), (2, 10656359), (7, 3044674), (14, 1522337), (19, 1121722), (38, 560861), (133, 160246), (266, 80123), (361, 59038), (722, 29519), (2527, 8434), (4217, 5054)]