19378863

素因数分解:

$3^2\times 7^2\times {\mathrm{43943}}^1$

素因数の和:43963

約数の個数: 18

約数和(自身を含む): 32562504

約数和(自身を除く): 13183641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43943, 131829, 307601, 395487, 922803, 2153207, 2768409, 6459621, 19378863]

約数ペア:

[(1, 19378863), (3, 6459621), (7, 2768409), (9, 2153207), (21, 922803), (49, 395487), (63, 307601), (147, 131829), (441, 43943)]