18205509

素因数分解:

$3^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{457}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 28403328

約数和(自身を除く): 10197819

約数列:

[1, 3, 7, 21, 49, 147, 271, 457, 813, 1371, 1897, 3199, 5691, 9597, 13279, 22393, 39837, 67179, 123847, 371541, 866929, 2600787, 6068503, 18205509]

約数ペア:

[(1, 18205509), (3, 6068503), (7, 2600787), (21, 866929), (49, 371541), (147, 123847), (271, 67179), (457, 39837), (813, 22393), (1371, 13279), (1897, 9597), (3199, 5691)]