19701385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 9069815

約数列:

[1, 5, 11, 17, 19, 55, 85, 95, 187, 209, 323, 935, 1045, 1109, 1615, 3553, 5545, 12199, 17765, 18853, 21071, 60995, 94265, 105355, 207383, 231781, 358207, 1036915, 1158905, 1791035, 3940277, 19701385]

約数ペア:

[(1, 19701385), (5, 3940277), (11, 1791035), (17, 1158905), (19, 1036915), (55, 358207), (85, 231781), (95, 207383), (187, 105355), (209, 94265), (323, 60995), (935, 21071), (1045, 18853), (1109, 17765), (1615, 12199), (3553, 5545)]