21105854

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4421}}^1$

素因数の和:4472

約数の個数: 32

約数和(自身を含む): 40753152

約数和(自身を除く): 19647298

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 154, 217, 341, 434, 682, 2387, 4421, 4774, 8842, 30947, 48631, 61894, 97262, 137051, 274102, 340417, 680834, 959357, 1507561, 1918714, 3015122, 10552927, 21105854]

約数ペア:

[(1, 21105854), (2, 10552927), (7, 3015122), (11, 1918714), (14, 1507561), (22, 959357), (31, 680834), (62, 340417), (77, 274102), (154, 137051), (217, 97262), (341, 61894), (434, 48631), (682, 30947), (2387, 8842), (4421, 4774)]