21890356

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16943}}^1$

素因数の和:16983

約数の個数: 24

約数和(自身を含む): 42698880

約数和(自身を除く): 20808524

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16943, 33886, 67772, 288031, 321917, 576062, 643834, 1152124, 1287668, 5472589, 10945178, 21890356]

約数ペア:

[(1, 21890356), (2, 10945178), (4, 5472589), (17, 1287668), (19, 1152124), (34, 643834), (38, 576062), (68, 321917), (76, 288031), (323, 67772), (646, 33886), (1292, 16943)]