21111797

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 4743403

約数列:

[1, 7, 29, 49, 83, 179, 203, 581, 1253, 1421, 2407, 4067, 5191, 8771, 14857, 16849, 36337, 103999, 117943, 254359, 430853, 727993, 3015971, 21111797]

約数ペア:

[(1, 21111797), (7, 3015971), (29, 727993), (49, 430853), (83, 254359), (179, 117943), (203, 103999), (581, 36337), (1253, 16849), (1421, 14857), (2407, 8771), (4067, 5191)]