21381558

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2473}}^1$

素因数の和:2620

約数の個数: 32

約数和(自身を含む): 47025792

約数和(自身を除く): 25644234

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 131, 262, 393, 786, 1441, 2473, 2882, 4323, 4946, 7419, 8646, 14838, 27203, 54406, 81609, 163218, 323963, 647926, 971889, 1943778, 3563593, 7127186, 10690779, 21381558]

約数ペア:

[(1, 21381558), (2, 10690779), (3, 7127186), (6, 3563593), (11, 1943778), (22, 971889), (33, 647926), (66, 323963), (131, 163218), (262, 81609), (393, 54406), (786, 27203), (1441, 14838), (2473, 8646), (2882, 7419), (4323, 4946)]